LIBRARY 

OF  THE 

UNIVERSITY  OF  CALIFORNIA 


General  Reference 


Assay  Weights  .............................................  pages     11  to  13 

Balances  and  Scales,  all  kinds  .......  f  ........................  "  1  to  32 

Battersea  Crucibles,  Scorifiers,  Furnaces,  etc  ....................  "  48,  56,  58 

Blowpipe  Apparatus  .........................................  "  193  to  201 

Hoskins'  Hydro-Carbon  Blowpipes  and  Furnaces  ...............  ''  49,  50  to  53 

Fletcher's  and  other  Blowpipes,  Burners  and  Furnaces  ............  "  55,  87  to  98 

Taylor  Rock  Crusher  .........................................  "  38 

Assayers'  Outfits  ...........................................  "  179  to  182 

Text-Books  on  Assaying,  Mining,  Mineralogy,  Chemistry,  etc...  "  202  to  211 

Chemicals  and  Reagents  ......................................  "  212  to  223 

Patent  Respirators  ...........................................  "  170 

Mill  Materials  ...............................................  "  167  to  174 

Bulky  or  heavy  goods  can  be  sent  C.  O.  D.  by  freight,  in  care  of  the  nearest 
bank,  or  by  arrangement  with  Wells  Fargo  &  Go's  Express. 

Prices  in  this  edition  have  all  been  carefully  revised  and  in  many  cases  lowered. 
On  orders  of  twenty  dollars  and  upwards,  on  most  articles,  a  discount  will  be 
allowed. 


OUR 
SPECIALTIES 


Battersea  (London)  Crucibles,  Muffles,  Scorifiers,  Furnaces,  Etc. 
Denver  Fire  Clay  Company,  Denver,  Colorado. 
Baker  &  Adamson's  C.  P.  Acids  and  Ammonia. 
Ziegler  Electric  Company,  Boston,  Mass. 
Denniston's  Silver-Plated  Amalgam  Plates. 

Oertling's,  Becker's,  Troemner's,  Ainsworth's  and  Smith  & 
Thompson's  Assay  and  Bullion  Balances  and  Weights. 

Bone  Ash. — Prepared  expressly  for  Assayer's  use.  We  have 
three  grades,  viz.:  No.  1  Extra,  No.  1  and  No.  2,  all 
from  carefully  selected  bones,  well  burnt  and  ground, 
such  as  we  have  sold  for  years,  and  well  known  as 
J.  T.  &  Go's  Bone  Ash. 

Blowpipe  Balances  and  Utensils. 
Hoskins'  Hydro-Carbon  Blowpipes  and  Furnaces. 
Fletcher's  Blowpipes,  Burners  and  Furnaces. 
Litharge. — Chemically  pure,  put  up  in  25-lb.  bags. 

Pure  Assay  Lead. — Guaranteed,  granulated,  rolled  in  thin 
sheets,  also  in  small  bars. 

Chemical  Apparatus  in  all  its  variety.  We  are  always  pre- 
pared to  make,  at  short  notice,  new  apparatus  for  any 
special  purpose. 

Our  Gold  and  Silver  Tables,  showing  the  value  per  ounce 
Troy  at  different  degrees  of  fineness,  and  valuable  tables 
for  computation  of  assays  in  grains  and  grammes,  will  be 
sent  free  on  application. 


ESTABLISHED    1852  INCORPORATED  OCT.   1895 


JOHN  TAYLOR  &  CO 


Importers,  Dealers 
and  Manufacturers  of 


ASSAYERS'  MATERIALS 


MINE  AND  MILL  SUPPLIES 


SCHOOL,  PHYSICAL  AND  CHEMICAL  APPARATUS 


OF   THE 

UNIVERSITY 

OF 


CHEMICALS,  ETC. 


Books  on  Assaying,  Mining  and  Chemistry 


UNION  FOUNDRY  BLOCK,  COR.  FIRST  AND  MISSION  STS. 

SAN  FRANCISCO,  CALIF. 


SEVENTH     EDITION. 


TO  OUR  PATRONS 


WE  again  take  pleasure  in  handing  you  our  new  and  carefully  revised  CATA- 
LOGUE AND  PRICE  LIST,  being  our  seventh  edition.     This  catalogue  is  not 
alphabetically  arranged,  but  articles  are  classified  and  put  together  as  nearly  as  pos- 
sible with  a  view  for  the  convenience  of  buyers  making  selections. 

We  have  taken  great  pains  in  preparing  this  edition;  prices  have  all  been  thor- 
oughly revised  and  made  lower  on  many  articles.  We  bespeak  a  careful  comparison 
in  this  respect.  Quite  a  list  of  new  articles  has  been  added,  many  of  our  own  manu- 
facture and  modeled  from  our  own  designs  and  molds.  We  think  all  will  be  found 
fully  up  to  the  growing  wants  of  the  miner,  assayer,  chemist,  and  schools. 

Acids,  Bone  Ash,  Bluestone,  Cyanide  of  Potash,  Borax,  Manganese,  and  many 
supplies  and  materials  are  manufactured  here;  and  all  articles,  taking  into  consider- 
ation the  quality  and  adaptation  to  the  wants  of  the  mining  interests  (which  we  can 
assure  from  our  long  experience  in  the  line),  can,  we  think,  be  supplied  here  as 
advantageously  as  elsewhere. 

We  keep  a  full  stock  of  Mercks  Pure  Chemicals. 

All  our  Boiling  Flasks  and  Beakers  are  carefully  selected  from  the  best  Bohemian 
manufacturers,  and  are  of  uniform  thickness  and  full  size  as  per  factory  numbers. 

All  articles  will  be  furnished  as  low  as  the  same  quality  can  be  had  in  the 
market.  Staple  chemicals  in  quantity  will  be  quoted  at  net  prices;  our  customers 
will  have  the  benefit  of  the  lowest  prices  as  the  market  fluctuates. 

Our  Crucibles,  Glass,  Porcelain  Ware,  etc.,  we  import  direct  by  sail  vessel, 
at  lowest  freights,  from  the  largest  and  best  known  manufacturers,  and  can  sell  on 
most  favorable  terms. 

We  are  agents  for  the  Pacific  Coast  for  the  Morgan  Crucible  Company  (Battersea, 
London),  whose  goods  are  illustrated  throughout  the  Catalogue.  Also  other 
agencies,  see  list  elsewhere. 

We  aim  to  keep  in  stock  all  books  used  by  chemists,  assayers,  and  miners,  and 
procure  new  books  as  published.  We  also  import  foreign  publications. 

Orders  from  strangers  must  be  accompanied  with  the  cash  or  a  satisfactory 
reference. 

On  all  orders  to  be  sent  C.  O.  D.  a  remittance  will  be  required  as  a  guarantee 
for  expressage  both  ways.  Boxing  and  cartage  at  cost.  All  goods  packed  with 
the  utmost  care  by  experienced  hands.  Our  responsibility  ceases  upon  delivery  of 
goods  to  the  carrier  and  obtaining  a  shipping  receipt.  We  will  not  guarantee 
against  breakage  of  goods  in  transit  unless  they  are  insured. 

Having  enjoyed  the  confidence  of  the  mining  community  for  over  forty  years, 
we  may  confidently  promise  that  any  orders  intrusted  to  us  will  be  filled  with  fidelity 
and  dispatch,  with  the  best  quality  of  goods  in  our  line. 

Hoping  to  be  favored  with  your  continued  orders, 

We  are,  yours  truly, 

JOHN  TAYLOR  &  CO. 

SAN  FRANCISCO,  JUNE,  1899. 


JOHN    TAYLOR    &   CO.,  SAN    FRANCISCO,  JCALIF. 


ASSAY   BALANCES. 


No. 

1100  Assay  Balance,  Oertling's  No.  12,  with  a  beam  10  inches  long,  of 
an  improved  construction,  on  a  stand  with  double  columns  ;  to 
carry  2  grammes  in  each  pan,  and  turn  with  riders.  Beam 
divided  into  50  parts.  Takes  a  5  milligramme  rider  which  reads 
yio  milligramme,  or  takes  a  1  milligramme  rider  which  reads  l/9o 
milligramme,  or  takes  a  %  milligramme  rider  which  reads  yioo 
milligramme.  Rider  arrangement  on  both  arms  of  the  beam; 
has  agate  knife  edges  working  on  agate  planes  ;  plate  glass  for 
the  bottom  of  the  case. 

Price,  without  weights $175 .00 

205945 


JOHN    TAYLOR    &   CO.,  SAN    FRANCISCO,  CALIF. 


1101 


No. 
1101 


Assay  Balance,  Oertling's  No.  12  A,  with  a  beam  10  inches  long, 
of  an  improved  construction,  with  arms  to  support  the  beam  and 
lift  it  and  the  pan  hangers  from  the  knife  edges;  to  carry 
2  grammes  in  each  pan,  and  turn  with  O.I  milligramme.  Rider 
arrangement  on  both  arms  of  the  beam.  Beam  is  divided  into 
50  parts.  Takes  a  5  milligramme  rider  which  reads  }{0  milli- 
gramme, or  takes  a  1  milligramme  rider  which  reads  %0  milli- 
gramme, or  takes  a  Yt  milligramme  rider  which  reads  }(QO  milli- 
gramme. Has  agate  knife  edges  working  on  agate  planes; 
plate  glass  for  the  bottom  of  the  case. 

Price,  without  weights $225.00 


JOHN    TAYLOR    &    CO.,  SAN    FRANCISCO,  CALIF. 


1102 


No. 

1102  Assay  Balance,  Oertling's  No.  12  SB.  Short  beam, [same  style 
and  sensibility  as  No.  12.  Beam  is  only  6  inches  long  ;  index 
pointer  reaches  down  5  inches  below  center  of  knife  edge,  which 
is  made  of  agate  and  rests  upon  agate  planes,  so  that  a  very 
slight  movement  of  end  of  beam  is  multiplied,  and  easily  read 
on  graduated  ivory  scale.  Beam  divided  into  50  parts.  Takes 
a  5  milligramme  rider  which  reads  }{0  milligramme,  or  takes  a 
1  milligramme  rider  which  reads  %0  milligramme,  or  takes  a 
y?  milligramme  rider  which  reads  /£00  milligramme.  Rider 
arrangement  on  both  arms  of  the  beam  ;  has  agate  knife  edges 
working  on  agate  planes  ;  plate  glass  for  the  bottom  of  the  case. 

Price,  without  weights $175.00 


JOHN   TAYLOR    &   CO.,  SAN    FRANCISCO,  CALIF. 


1103 


No. 

1103  Assay  Balance,  Oertling's  No,  12  C,  with  8-inch  beam,  of  an 
improved  construction,  to  carry  5  grammes  in  each  pan,  and 
turn  with  }{0  milligramme.  Rider  arrangement  on  both  arms  of 
the  beam.  The  beam  is  fitted  with  agate  knife  edges,  working 
on  agate  planes,  and  is  divided  into  100  divisions;  50  divisions 
on  each  arm,  the  last  division  at  each  end  coinciding  with  the 
end  knife  edge;  double  rider-slide;  plate  glass  to  bottom  of  case; 
reflector  for  illuminating  the  divisions  on  the  beam;  polished 
mahogany  glass  case,  with  counterpoise  weights  to  front  slide. 
This  instrument  is  richly  gilt.  Takes  a  5  milligramme  rider 
which  reads  l/{0  milligramme,  or  takes  a  1  milligramme  rider 
which  reads  ys<3  milligiamme,  or  takes  a  Y?  milligramme  rider 
which  reads  l/loo  milligramme. 

Price,  without  weights $250.00 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


No. 
1111 


1113 


Assay  Balance,  Becker's  No.  1  A,  with  apparatus  for  rider.  Rider 
can  be  placed  on  the  center  of  the  beam  and  used  from  the 
O  point.  Needle  deviates  20  divisions  on  scale  for  one  milli- 
gramme. Takes  a  2  milligramme  rider  which  reads  /{0  milli- 
gramme. Can  be  charged  up  to  25  grammes.  Steel  knife  edges 
resting  upon  agate  planes. 

Price,  without  weights $  65 . 00 


1112  Assay  Balance,  Becker's  No.  2,  portable,  in  French  polished 
glass  case,  9  inches  long,  9^  inches  high  and  3  inches  deep, 
sliding  frame  counterpoised;  packed  in  a  light  box,  with  strap 
for  carrying,  weighing,  all  boxed,  4y£  Ibs.  Needle  deviates  20 
divisions  on  the  scale  for  1  milligramme.  Takes  a  2  milli- 
gramme rider  which  reads  yio  milligramme.  With  apparatus 
for  rider,  set  of  weights,  1  platinum  gramme  to  }(0  milligramme. 

Price,  with  weights $  75 . 00 


1113  Assay  Balance,  Becker's  No.  5.  Of  improved  construction,  for  a 
charge  in  each  pan  of  10  grammes,  with  apparatus  to  move 
riders  upon  beam;  knife  edges  of  steel  resting  upon  agate 
planes.  The  beam  is  divided  into  20  equal  parts.  The  needle 
deviates  20  divisions  on  scale  for  1  milligramme.  Balance  is 
provided  with  set  of  riders,  2  milligrammes,  which  reads  to 
yio  milligramme.  Glass  case  with  sliding  door. 

Price,  without  weights $  95 . 00 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


1116 


No. 
1114 


Assay  Balance,  Becker's  No.  5  A.  Assay  Balance  improved,  on 
plate  glass  base,  with  agate  knife  edges  and  agate  planes.  Both 
arms  of  beam  are  divided  into  100  parts.  Takes  a  2  milligramme 
rider  which  reads  */So  milligramme.  Needle  deviates  20  divisions 
on  the  scale  for  1  milligramme. 

Price,  without  weights $125 .00 


1116  Assay  Balance,  Becker's  No.  4.  Short  beam;  in  French  polished 
mahogany,  glass  case,  front  sliding  frame  counterpoised,  with 
glass  top  to  admit  light  on  beam.  All  parts  of  the  balance 
are  mounted  and  fastened  on  plate  glass  %6  inch  thick,  so  that 
nothing  can  get  out  of  order  through  warping  of  the  wood.  All 
bearings  are  agate  planes  with  agate  knife  edges;  the  beam  is 
graduated  into  }£0  milligramme,  and  in  such  a  manner  that  the 
rider  can  be  placed  on  the  center  of  the  beam  and  used  from  the 
O  point  to  eitber  end  of  the  beam.  Needle  deviates  50  divisions 
on  the  scale  for  1  milligramme.  Beam  is  divided  into  60 
equal  parts.  Takes  a  rider  1/{0  milligrammes  which  reads 
l/5o  milligramme. 

Price,  without  weights $135.00 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


1118 


No. 

1118  Assay  Balance,  John  Taylor  &  Co.'s.  Sensible  to  %00  of  one 
milligramme,  in  polisbed  mahogany  glass  case,  plate  glass 
base,  glass  top  to  admit  light,  sliding  door  counterpoised.  The 
beam  is  made  of  aluminum,  six  inches  in  length  and  is  divided 
into  50  divisions  on  each  side  of  center.  Takes  a  1  milligramme 
rider  which  reads  r/5o  milligramme,  or  takes  a  ^  milligramme  ' 

rider  which  reads  };oo  milligramme.  The  beam  is  open  top,  that  is, 
the  rider  can  be  placed  anywhere  from  the  center  division  to  the 
last  divisions  which  are  over  the  knife  edges.  This  balance  has 
agate  knife  edges,  and  agate  bearings,  fall-away  pan  rests, 
double  rider  attachment  level  and  leveling  screws.  A  most  ex- 
cellent balance  in  every  respect. 

Price,  without  weights $100.00 


JOHN   TAYLOR    &   CO.,  SAN    FRANCISCO,  CALIF. 


1121 


1122 


1123 


No. 

1120  Assay  Balance,  Troemner's  No.  0.     In  glass  case,  with  sliding 

door. 

Price,  including  set  of  weights,  either  10  grains  to  l/loo  grain 
or  1  gramme  to  1  milligramme $  35 . 00 

1121  Assay  Balance,  Troemner's  No.  1.     French  polished  mahogany 

case,  and  sliding  door  counterpoised.  All  bearings  of  agate 
with  steel  knife  edges.  Needle  deviates  10  divisions  on  scale 
for  1  milligramme. 

Price,  without  weights $  55  00 

1122  Assay  Balance,  Troemner's  No.  2.     Aluminum  beam,  arranged 

with  rider  apparatus.  Beam  is  divided  into  60  equal  parts. 
Takes  a  rider,  6  milligrammes,  which  reads  }{0  milligramme.  All 
bearings  of  agate  with  steel  knife  edges.  Needle  deviates  20 
divisions  on  scale  for  1  milligramme. 

Price,  without  weights $  80.00 

1123  Assay  Balance,  Troemner's  No.  3.      Of  great  sensibility;    the 

needle  indicating  40  full  divisions  for  1  milligramme.  Beam  is 
divided  into  60  parts.  Takes  a  rider,  6  milligrammes,  which 
reads  */IQ  milligramme.  All  bearings  of  agate.  Open  beam  of 
pure  aluminum;  has  new  improved  rest  for  riders;  mahogany 
case  with  glass  top,  and  bottom  of  heavy  plate  glass.  Balance 
is  sensible  to  l/loo  milligramme. 

Price,  without  weights $  95 . 00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


1124 


1125 


1124 


No. 
1124 


Assay  Balance,  Troemner's,  portable.  In  a  fine  French  polished 
case;  beam  and  needle  not  disturbed  when  packed  up;  case 
measures  9^  inches  long,  9%  inches  high  and  4  inches  deep. 
Packed  in  a  light  outside  case,  with  strong  leather  hand-strap. 
Needle  deviates  20  full  divisions  for  1  milligramme.  A  full  set 
of  weights,  from  1  platinum  gramme  to  */to  milligramme,  in- 
cluded. 

Price,  with  weights $  70 . 00 

1125    Assay  Balance,  Troemner's  Extra  Fine,  No.  5  (new).    Of  the 

very  finest  and  most  delicate  construction.  Beam  is  of  pure 
aluminum,  with  agate  knife  edges  and  all  bearings  of  agate. 
Has  a  double  column,  with  improved  new  eccentric  lift  that 
works  perfectly  smooth  and  regular.  Beam  divided  on  both 
arms.  Beam  divided  into  50  parts,  and  takes  a  rider,  5  milli- 
grammes, which  reads  */lo  milligramme,  or  takes  a  1  milli- 
gramme rider  which  reads  y,0  milligramme,  or  takes  a  ^  milli- 
gramme rider  which  reads  #£0  milligramme.  Glass  case  is  large 
and  roomy,  with  heavy  plate  glass  bottom.  The  balance  has 
recently  been  improved  and  will  indicate  */300  of  a  milligramme. 
The  sensibility  has  been  vastly  increased,  and  it  is  the  equal  of 
any  balance  made.  This  balance  is  intended  for  the  skilful 
and  careful  assayer,  and  is  too  delicate  for  rough  work  or  rough 
handling.  Needle  indicates  40  full  divisions  for  1  milligramme. 

Price,  without  weights $175 . 00 

NOTE. — This  balance  is  used  as  an  Umpire  Balance  at  the  U.  S.  Assay  Office,  New  York,  at 
the  State  School  of  Mines,  Golden,  Colorado,  and  at  the  San  Francisco  Mint. 

Special  attention  is  called  to  the  superior  quality  of  Agate  Bearings.  The  small  additional 
cost  of  agate  bearings  is  merely  nominal  when  compared  with  the  manifold  advantages  attained. 
In  damp  or  moist  climates  agate  is  invaluable,  as  it  will  not  rust  or  corrode,  and  is  indestructible. 


10 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


1130 


1131 


No. 
1130 


Assay  Balance,  Plattner's  Blowpipe.  Packs  in  box  10^  inches 
long,  6^  inches  wide,  1^  inches  deep.  Power  10  grains  to  %00; 
beam  1%  inches  long,  with  2  pairs  movable  pans,  and  ivory 
spoon.  With  weights,  10  garins  to  /{co  grain,  or  1  gramme  to  1 
milligramme. 

Price $  25 .00 


1131  Assay  Balance,  Pocket.  For  traveling;  when  closed,  measures  6 
inches  long,  2^  inches  wide,  and  1^  ^ch  high.  Is  raised  and 
lowered  by  means  of  drop-lever.  Including  weights,  10  gram- 
mes down  to  1  milligramme,  neatly  fitted  in  box,  as  shown  in 
cut.  Shows  4  divisions  for  1  milligramme.  This  balance  can 
be  supplied  with  a  ^  assay  ton  weight  (if  desired)  in  place  of 
the  10  gramme  weight,  making  it  complete  for  a  pulp  scale  or 
for  assaying  where  ^  milligramme  is  sufficient. 

Price $  18.00 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF.  11 


ASSAY  WEIGHTS. 


ASSAY    WEIGHTr||| 

\.OOO  =    \    GRKMME'WJA 


1150-1-2 
No. 

1150  Assay  Weights,   Oertling's.       In  ivory  boxes,  screw  lid,  marked 

1000=1  gramme.      Sheet  platinum  weights,  1 

gramme  to  1  milligramme,  and  6  riders,  each 

10  milligrammes. 

Price $  13.00 

1151  Same  style  as  1150,  marked  1000=^   gramme. 

Sheet  platinum  weights,  y2  gramme  to  ^  milli- 
gramme, and  6  riders,  each  weighing  5  milli- 
grammes. 
Price : 13.00 

1152  Same  style  as  1150,  marked  1000=10  grains.   Plat- 

inum  wire  weights,   10   grains  to  ^00,   and   6 

riders,  each  j{0  grain. 

Price 1 3 . 00 

1160  Becker's,    No.    1.        Ebony    box;    1    platinum 

gramme  and  down  to  %0  milligramme. 

Price 10.60 

1161  No.  9.     Same  style,  10  grains  to  X000  grain 10. 60 

1170  Troemner's.        In  ebony  box;   largest  weights 

made  of  platinum;   1   platinum   gramme  to  /£0 
milligramme 8 . 50 

1171  Same  style,  10  grains  to  ;/000  grain 9 . 50 

1172  In    mahogany    box;     aluminum;     1     aluminum 

gramme  to  1  milligramme ...         5 . 00 

1173  Same  style,  10  grains  to  %00  grain 5 .00 

1180  Becker's.     Single,  separate  from  full  sets,  without  boxes. 

Made  of  sheet  platinum. 

Milligrammes..  500  200  100              50 

Each $1.10  1.00  .85             .75 

Grains 10               5                  21 

Each $1.10  1.00  .85             .75 

1181  Made  of  platinum  wire. 

Milligrammes. .  1  2         5       10       20       50»      100 

Each $.40  .40     .45     .50     .60     .75      .90 

Grains 10  521 

Each $1.00  .85     .75     .75 

1182  Made  of  sheet  aluminum. 

Milligrammes..  20           10  5              2  1 

Each $   .50         .45  .40  .35  .35 

Grains 5/lo  %        #0  %00        %00  tf00 

Each $.50  .40     .35  .40        .35  .35 


12 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


No. 

1183  Assay  Weights.     Made  of  aluminum  wire. 

Milligrammes..         10        5        2         1        %0       %0        */no 
Each $.50     .50      35     .25       .30     .25      .25 

rVaJtio  S/          2/         I/-          5//         2/f         */  s/  2//  I/' 

\JTldlLIS /I0    /I0    /I0    /IOO  /IOO  /IOO    /IOOO  /IOOO  /IOOO 

Each $   .35   .30  .25   .25   .25  .25    .35   .30    .25 

SECOND   QUALITY— Made  of  German  Silver  Sheet. 

1184  Milligrammes..  500       200       100        50        20        10 

Each $.80        .75       .60        .50       .40      .30 

Grains 10          5          2  1 

Each $  .65       .55       .50         .40 

1190  Single,  Oertling's,  as  in  set  No.  1152,  marked  1000=10 

grains. 
Made  of  platinum  wire. 

Grains 10  5  3  2  1 

Each $1.00          .90  .80          .75  .70 

Made  of  aluminum  wire. 

Grains  5/         V         V         V         5/        3/        2/        '/ 

Vjrldllia /I0  7,0  /J0  /I0  /I00       /I00        /,00       /I00 

Each $  .  65     .60     .55     .50     .45     .40     .35     .30 

1191  as  in  set  No.  1150,  marked  1000=1  gramme. 

Made  of  platinum  sheet. 

Milligrammes,     1000          500  200  100  50 

Each $130        1.10  1.00  .90  .80 

Made  of  aluminum  sheet. 

Milligrammes,        20              10  5  2  1 

Each $  .70             .60  .40  .35  .35 

1192  as  in  set  No.  1151,  marked  1000=^  grammes. 

Made  of  platinum  sheet,  gold  plated. 

Milligrammes,  1000-^  500-^      200-^  100- ^  50-^ 

Each $1.30         1.10        1.00           .90  .80 

Made  of  aluminum  sheet,  gold  plated. 

Milligrammes,  20-}^       20-}^       5-^  2-}^  1-tf 

Each $  .70             .60         .50  .40  .35 


JOHN  TAYLOR  &  CO.,  SAN   FRANCISCO,  CALIF.  13 

RIDERS    FOR   ASSAY   AND  ANALYTICAL 
BALANCES,  MADE  OF  ALUMINUM. 

No. 

1195     Oertling's,  gold-plated %0  grain,          10  5       milligrammes. 

Each $   .40  40         .40 

1197  Becker's,      %00  %0  *>/looo    grains. 

Each $  .35  .35  .50 

1198  1          1%0       2        12      milligrammes. 

Each $  .50     .50     .35     .35 

1199  Troemner's %00          6/loo  %0         grains. 

Each $  .35        .35  .35 

1 200  y2        1        5       6       12     milligrammes. 

Each $  .50  .50    .35   .35     .35 


EXTRA  PANS  FOR  ASSAY  BALANCES,  IN 
PAIRS,  BALANCED. 

No. 

1201  Oertling's  of  silver. 

Diameter,  ^  inch ;  per  pair $2 . 50 

1202  Troemner's,  brass,  nickel-plated. 

Diameter,  ^  inch ;  per  pair ;       $1 . 00 

1203  German,  deep  form,  brass,  nickel-plated. 

Diameter $/8  %  fo  %    inches. 

Per  pair $1.00         1.00       1.00         1.00 

1204  fine  horn. 

Diameter s/%         %     inches. 

Per  pair $1.00     1.00 


14 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


ANALYTICAL    BALANCES. 


1205 


No. 


1205  Analytical  Balance,  with  Non-Corrosive  Weights.  This  balance 
combines  features  which  are  not  to  be  had  in  any  other  balance 
for  the  same  price.  Short  beam  of  aluminum,  graduated  for 
rider,  with  adjusting  screws  on  both  ends.  Sensibility  }{Q  of  a 
milligramme  with  a  load  of  100  grammes.  Knife  edges  and 
planes  of  agate.  Arrests  for  pans  of  most  approved  kind,  with 
automatic  stop.  Bows  and  pans  extra  wide,  admitting  4  inch 
dish.  Mahogany  case,  with  glass  top;  best  American  work- 
manship. The  weights  range  from  1  milligramme  to  50 
grammes.  The  weights  from  1  milligramme  to  0.5,  and  riders 
are  of  solid  platinum;  the  large  weights  are  platinum  plated, 
making  them  non-corrosive.  This  set  will  be  furnished  in  a 
fine  mahogany  box. 

Price,  balance  and  weights $  60 . 00 


1206  Analytical  Balance,  Troemner's  No.  2,  capacity  100  grammes  in 
each  pan.  Sensible  to  y,0  milligramme.  Beam  10  inch,  divided 
into  yto  milligramme;  pans  V/t  inches.  Improved  arrest  for  pans; 
apparatus  for  specific  gravity.  In  a  fine  French  polished  glass 
case,  with  counterpoised  sliding  door;  all  of  the  finest  finish  and 
best  construction. 

Price,  without  weights $  85 . 00 


JOHN    TAYLOR   &    CO.,  SAN    FRANCISCO,  CALIF.  15 


1213 
No. 

1210  Analytical  Balance,  Becker's  No.  6.     Improved.     For  charge  up 

to  100  grammes  in  each  pan,  in  French  polished  glass  case, 
front  sliding  frame  counterpoised,  steel  knife  edges  resting  upon 
agate  planes.  Sensible  to  X  milligramme  with  its  full  charge, 
with  arrest  for  pans. 

Price,  without  weights $  45 . 00 

1211  Analytical  Balance,  Becker's  No.  6,  Improved.    For  charge  up  to 

100  grammes  in  each  pan,  with  apparatus  for  rider.  Beam 
divided  into  12  parts,  and  takes  a  rider,  12  milligrammes,  which 
reads  to  1  milligramme ;  there  are  half  divisions,  and  %  milli- 
gramme can  easily  be  read.  Steel  knife  edges  resting  upon 
agate  planes. 

Price,  without  weights $  50 . 00 

1212  Analytical  Balance,  No.  6  A,  Short  Beam.     In  mahogany,  French 

polished  glass  case,  glass  top  for  light  on  rider,  front  frame 
counterpoised,  for  a  charge  up  to  100  grammes  in  each  pan. 
Sensible  to  1/10  milligramme.  Beam  graduated  in  l/s  milligramme; 
provided  with  improved  pan  arrest,  riders,  agate  bearings,  etc. 

Price,  without  weights $  60 . 00 

1213  Analytical   Balance,  Becker's   No.  7.     For  a  charge  up  to  100 

grammes  in  each  pan,  in  fine  French  polished  glass  case,  front 
sliding  frame  counterpoised.  Agate  knife  edges  resting  upon 
agate  planes,  with  new  improved  arrangement  for  arrest  of  pans 
and  beam.  Sensible  to  %0  milligramme  with  its  full  charge  ; 
provided  with  apparatus  for  specific  gravity,  rider  and  weighing 
tubes.  Beam  divided  into  120  equal  parts,  and  takes  a  rider,  12 
milligrammes,  which  reads  to  /{0  milligramme  ;  pans  2^  inches 
in  diameter,  with  a  pair  of  2^  inch  glass  pans  balanced. 

Price,  without  weights $  95.00 


16 


JOHN    TAYLOR    &    CO.,  SAN    FRANCISCO,  CALIF. 


No. 

1214 


1214 

Analytical  Balance,  Becker's  No.  8  A.  Short  beam  balance 
lor  a  charge  up  to  200  grammes  in  each  pan  and  sensible 
to  yao  milligramme.  In  French  polished  mahogany  and  glass 
case,  front  sliding  frame  counterpoised,  with  glass  lop  to  admit 
light  on  rider.  All  parts  of  the  balance  are  mounted  and 
fastened  on  plate  glass  s/l(>  inch  thick,  so  that  nothing  can  get 
out  of  order  through  the  warping  of  the  wood.  All  bearings 
are  agate  planes,  with  agate  knife  edges.  The  beam  is 
graduated,  and  in  such  a  manner  that  the  rider  can  be  placed 
on  the  center  of  the  beam  and  used  from  the  O  point  to  either 
end  of  the  beam.  Beam  divided  into  60  parts.  Takes  a  rider, 
6  milligrammes,  which  reads  to  */lo  milligramme.  This  balance 
is  provided  with  new  improved  arrangements  for  arrest  of  pans 
and  beam,  riders,  apparatus  for  specific  gravity  and  for  weigh- 
ing tubes.  Pans  2|/6  inches  in  diameter.  Width  of  pan  support 
4  inches;  can  be  made  wider  if  desired. 

Price,  without  weights  ...................    ..............  $125  .  00 


.  —  All  our  Assay  and  Analytical  Balances  are  provided  free  with  a  set  of  glass  supports, 
which  lie  upon  the  table,  and  upon  the  topis  a  conical  depression  into  which  the  leveling  screws 
of  the  balance  rest,  giving  solidity  to  the  scale  case.  Also,  one-half  dozen  Watch  Glasses,  two 
Camel's-Hair  Pencil  Brushes,  one  flat  Camel's-Hair  Brush,  one  pair  Pincets  and  Riders. 

With  all  scales  we  can  furnish  grain  weights  and  riders  in  place  of  gramme  weights,  if  desired. 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


17 


1218 


No. 
1215 


1216 


1217 


1218 


1219 


1215 

Pulp  Balance,  Becker's  No.  16.  In  French  polished  glass  case; 
with  counterpoised  front,  sliding  scale,  provided 
with  eccentric  for  lifting,  bows,  and  movable  pans 
for  a  charge  up  to  2  ounces  in  each  pan.  Sensible 
to  yso  grain  with  its  full  charge. 
Price,  without  weights $  22.00 

No.  18.     Same  as  No.  1215,  but  for  a  charge  up  to  5 
ounces  in  each  pan.     Sensible  to  /^0  grain. 
Price,  without  weights $  26 . 00 

No.  20.     Same  as  No.  1215,  but  for  a  charge  of  10 
ounces  in  each  pan.     Sensible  to  ^0  grain. 
Price,  without  weights $  35 . 00 

Troemner's.  This  balance  is  one  of  the  best  and 
most  reliable  that  can  be  used.  For  stability  and 
endurance  it  has  no  superior.  Mahogany  case, 
counterpoised  door,  sliding  upward ;  has  solid 
nickel  pans ;  has  adjusting  screw  on  beam  to 
balance  scale.  Capacity  2  ounces  in  each  pan.  It 
is  sensible  to  yso  grain. 
Price,  without  weights $  22.00 

Taylor's.     Same  as  No.   1215,  but  with  adjusting 
screws  at  each  end  of  the  beam. 
Price,  without  weights $  22 .00 


18 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


1220 


1223 


No. 

1220 


Pulp  Balance,  Becker's  No.  14,  on  French  polished  box  with 
drawer;  eccentric  for  lifting,  bows,  and  movable 
pans  Can  be  charged  up  to  2  ounces  in  each  pan. 
Sensible  to  Y5o  grain. 

Price,  without  weights $  11 .00 


1221 


Becker's  No.  17,  same  as  above.  For  5  ounces  in 
each  pan,  on  French  polished  box  with  drawer, 
provided  with  eccentric  lor  lifting,  bows,  and  mov- 
able pans.  Sensible  to  */3o  grain. 

Price,  without  weights $  15.00 


1222 


Becker's  No.  19,  same  as  above.  For  10  ounces 
in  each  pan,  on  French  polished  box  with  drawer, 
provided  with  eccentric  for  lifting,  bows,  movable 
pans,  set  screws  and  level.  Sensible  to  }{Q  grain. 

Price,  without  weights $  22 . 00 


1223     Levels,  Spirit,  for  balances. 

Size 

Each  . 


Brass  mounted. 


3 

$   .50 


4 
.60 


5     in. 

.70 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


19 


1230 


1232-3 


1238 


No. 
1224 


1225 
1230 
1232 
1233 

1235 

1236 
1238 


Brushes,  flat,  camePs-hair.     For  cleaning  scale  pans. 

Inches 1  1#  2 

Each $  .30        .35  .40 

pencils,  camel's-hair.    %6  inch  quills,  per  dozen $  .35 


Pulp  Spoons,  brass.     Double  end,  ^  and  1  inch  bowls,  each $  .50 

japanned  tin.     Double  ends,  with  two  size  cups,  each  $  .25 


japanned  tin.    With  one  spatula  end,  convenient  for  measur- 
ing and  mixing  fluxes,  each $   .25 


Scale  Pans,    glass.     Accurately  balanced. 

Diameter 2}£      2^      3    inches. 

Per  pair $.60     .60    .60 


polished  brass.    Deep  form,  flattened  at  the  bottom,  balanced. 
Diameter,  2^  inches;  per  pair $1 .00 


Glass  Feet,  or  circular  discs,  solid,  for  placing  under  the  leveling  screws  of 

assay  balances  to  give  solidity.     They  have  a  conical  recess 

to  receive  the  point  of  screw;  per  dozen $  .75 


20 


JOHN  TAYLOR   &    CO..  SAN    FRANCISCO,  CALIF. 


WEIGHTS  OF  PRECISION   FOR  ANALYTICAL 
ASSAYING  AND  SCIENTIFIC  USE. 


No. 

1242 
1243 
1244 

1250 
1251 
1252 


1242-4 

Grain  Weights. 

Becker's,  No.  10 .  .  1000  grains  to  #0 

"    18.. 1000       ' 
'<    22..  1000       ' 

Troemner's 1000  grains  to  }{ 

1000      ' 

. 1000      ' 


/loo 

I/ 

/IO 


"  V 

/IOO     » 

•  <  I/ 

/IO        » 


with  riders $18.00 

class  2  10.00 
class  2     7.75 

with  riders 14.00 

13  00 

,   12.00 


Gramme  Weights. 

Becker's,  No.  6 . 

5. 

4. 
13. 
12. 
11. 


200  grammes  to  1  M  G,  with  riders.  .  . 
IMG, 
IMG, 

IMG, class  2. 

1C  G, class  2. 

IMG,..        .  .class  2. 


1265 
1266 
1267 
1269 
1270 
1271 

1280 

Extra  weights  of  aluminum  and   platinum,  in  parts  of  grains  or  grammes,  in 
stock.     See  Catalogue,  numbers  1180-1184. 


100 

50 

100 

,100 

50 


$24.00 
18.00 
16.00 
10.00 
5.50 
9.00 


Troemner's,  50  grammes  to  1  M  G,  with  riders 14.00 


No. 


1290*  Assay  Ton  Weights,  Troemner's  or  Becker's. 

4  A.  T.  down  to  %0  A.  T.  .  . 
1292*  1  A.  T.  to     o  A.  T 


1293* 


single,  separate  from  full  sets. 
Size....        421^ 
Price... 1.25  1.00  1.00    .90 


/s 

.75 


/IO 

.60 


6.00 
3  75 


/ao 

.50 


*(The  weight  denominated  by  Dr.  Chandler  "One  A.  T."  equals  29.1666  grammes,  and  con- 
tains, consequently,  as  many  milligrammes  as  there  are  troy  ounces  in  a  ton  avoirdupois  of  2000 
pounds.  The  assay  ton  weights  is  a  system  made  up  from  a  comparison  of  the  avoirdupois,  troy  and 
gramme  weights,  and  will  be  found  extremely  simple  and  useful,  saving  a  vast  amount  of  calcu- 
lation and  labor.  The  unit  of  the  system  is  the  assay  ton  =  29,1666  grammes.  Its  derivation  will 
be  seen  at  a  glance.  1  Ib.  avoirdupois  =  7000  troy  grains;  2000  Ibs.  =  1  ton ;  2000  x  7000  =  14,000,000 
troy  grains,  in  1  ton  avoirdupois;  480  troy  grains  =1  ounce  troy;  14,000,000 -r- 480  =  29,1666  troy 
ounces  in  2000  Ibs.  avoirdupois.  There  are  29, 1666  milligrammes  in  one  assay  ton  (A..  T.);  hence 
2000  Ibs.  is  to  1  A.  T.  as  1  ounce  troy  is  to  1  milligramme.  Therefore,  if  1  A.  T.  of  ore  assays  1 
milligramme  of  gold  or  silver,  the  ton  contains  1  ounce  troy.) 

1295     Normal  Sugar  Weights,  26.048  or  13.024;  each $    1 .00 


JOHN  TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


21 


BULLION    BALANCES, 


1300-1 


No. 

1300  Bullion  Balance,  Becker's  No.  29.  Bullion  and  specie  scale,  carry- 
ing 500  ounces  in  each  pan.  Sensible  to  1  grain 
with  that  charge.  All  bearings  planes,  with  new 
improved  construction  for  the  arrestation  of  the 
beam  and  pans,  provided  with  set  screws  and 
level. 

Price,  without  weights $165.00 


1301 


Becker's  No.  31.    Bullion  and  specie  scale.    For 

2000  ounces  in  each  pan.  Sensible  to  2  grains  with 

that  charge. 

Price,  without  weights $220.00 


22 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


1310-12 


No. 

1310    Bullion  Balance,  Troemner's.    Balance  has  brass  beam,  pans,  and 

bows  ;  improved  raising  apparatus,  provided  with 
glass  level  and  leveling  feet ;  adjusting  screws  on 
beam,  etc.  A  full  set  of  weights  included  ;  large 
weights  are  of  iron,  bronzed  ;  those  from  50  ounces 
and  down  are  of  brass,  in  a  walnut  block. 

Capacity   500          1000          1500  ounces. 

Price $95.00       120.00       150.00 


13151 


Troemner's.  Balance  has  an  iron  beam  and 
eccentric  lift ;  adjusting  screws  on  beam  ;  brass 
pans  ;  price  includes  a  full  set  of  weights. 

Capacity,    500  ounces  ;  price $  75 .00 

1500      "  "  100.00 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,    CALIF. 


23 


1317 


1322-3 


No. 

1317  Balance  of  the  very  finest  finish  ;  in  French  polished  glass  case,  with 
counterpoised  door,  sliding  upward.  Has  open  beam;  8-inch 
nickel  pans  that  are  movable.  Capacity  200  ounces,  and 
sensible  to  y2  grain.  Has  extra  pan  for  loose  matter.  Inside 
measure  of  case  is  35  inches  high,  30  inches  wide.  Price 
includes  a  full  set  of  weights,  50  ounces  to  1  grain.  These 
are  neatly  fitted  in  the  drawer  of  case. 

Price $  95.00 


1318 


With  weights,  100  ounces  down  (225  ounces  in  all) 105.00 


1319  Platform  Bullion  Scales,  Howe's.     Brass  beam,  graduated  into 

%  ounce ;  capacity,  2880  ounces  troy ;  brass 
weights,  poise  and  counterpoise  ;  the  platform 
13^x19  inches.  All  packs  in  box  28^x18 
x5>^  inches.  Weight  boxed,  90  pounds. 

Price,   boxed, .' 50 . 00 

Scales,  Fairbank's.  Adjusted  y±  troy  ounce, 
with  set  screw  in  poise  ;  brass  weights,  poise 
and  counterpoise.  Weights  marked  in  Troy 
ounces. 

1320  Capacity,  3200  to  #  ounces,  price 50.00 

1321  "          2400  to  ^  ounces,  price 30.00 

1322  Scales,  Fairbank's.  120  ounces  to  30  grains,  price 20.00 

1323  7000  grains  to^lO  grains,  price 15 . 00 


24 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


MOISTURE  AND  TRIP  SCALES. 


1324 


1327 


No. 

1324  QuicksilYer   or    Amalgam    Scale   Scoop.     Russia  iron;  14  inches 

long,    8}4  inches   wide,    5^    inches   deep,   with   counterpoise 
weight     Price $  4 . 00 

1325  Brass  Scoop  ;  9  inches  long,  7   inches   wide,  3  inches  deep,  with 

counterpoise  weight,  for  Bullion  Balances  Nos.  1300-1315. 

Price 3.00 

1326  Moisture  Scales.     This  scale  is  so  constructed  that  on  using  a  moist- 

ure charge  of  2  pounds  the  sliding  weight  on  the  beam  indicates 
the  exact  per  cent  of  loss  or  moisture. 

Price,  including  set  of  weights,  2  pounds  to  ^  ounce 10.00 

Example:  Place  a  two-pound  weight  on  left  hand  platform,  counterpoise  with  ore  to  be 
tested  for  moisture  on  the  right;  then  dry  the  sample  so  weighed  and  place  on  same  platform  as 
before;  and  counterpoise  by  sliding  weight  on  beam,  when  you  read  off  the  ounces  lost  and  per 
cent  of  loss.  For  absolute  accuracy  and  simplicity  it  has  no  equal. 

Any  other  weight  or  charge  may  be  used,  when  a  simple  calculation  gives  correct  per  cent  of 
moisture. 

1327  Moisture  Scales.     For  weighing  mineral  specimens,  etc. 

Power    1      Ib.  with  two  4^  in.  circular  removable  pans $  2.50 

"        2      Ibs.            "     5%               "               "             "     3.00 

"        4*4     "     "      "     6                  "              "             "     3.50 

••      11        ««     "      "     8                  "              "            "     4.75 

"      22        "     '<      "     8                  "              "             "     5.50 


JOHN    TAYLOR   &   CO.,    SAN    FRANCISCO,    CALIF. 


25 


1328-9 


1337 


No. 
1328 


1329 


1335 
1336 

1337 


Moisture  Scales.  These  scales  are  used  at  smelting  and  similar 
plants  for  determining  the  percentage  of  moisture  in  ores,  etc. 
The  ordinary  capacity  scale  is  made  to  weigh  a  sample  of  50 
ounces,  but  special  scales  are  manufactured  to  order  of  other 
capacities  as  described  below.  The  scale  beam  has  two  rows  of 
graduations,  the  upper  row  giving  the  weight  in  ounces,  or 
pounds,  and  fractions  thereof;  the  lower  row  giving  the  per- 
centages. The  percentage  row  on  all  scales  is  figured  from  100 
to  0  per  cent  by  1  per  cent,  and  thus  the  reading  gives  the 
direct  percentage  of  loss.  The  given  amount  of  ore  is  first 
weighed,  then  dried  or  roasted  and  re- weighed  to  note  the 
loss  of  moisture  or  sulphur. 
50  to  yz  ounce  capacity $  10 . 00 

Same  as  No.  1328  from  50  to  y2  ounce  capacity,  but  has  fractional 
graduation  of  lx}/0  per  cent  on  tip  end  of  the  main  beam,  and 
both  the  main  and  fractional  beams  are  fitted  with  patent  latch 


poises 


25.00 


Trip  Scales.     For   manufacturing  chemists.      Has  very   large, 
shallow  or  saucer-shaped   movable  pan,    made   of  hammered 
copper.     All  bearings  are  of  steel. 
No.  0,  Diameter  of  pan  19  in. ,  capacity  40  Ibs 14 . 00 

"    1,        "  "    16  in.,        "        25  Ibs 10.00 

For  weights  for  these  scales  in  avoirdupois,  troy  or   gram- 
mes, see  catalogue  numbers  1340-1375. 

Harvard  Trip  Scales.     For  laboratory  work ;  with  2  six-inch 
porcelain  plates  and  side  beam  ;  2  kilogrammes  to  }(Q  gramme . ,          7 . 50 


26 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


WEIGHTS, 


1340 


1344 


1342 
No. 

1340  Weights,  Bullion,  Troemner's.     Brass,  in  oiled  walnut  blocks. 

20  ounce  troy  to  ^  grain,  per  set $  7 . 00 

30      "        "          y-2,       "            "      9.00 

50      "       "          y-t      "          "      12.50 

100      "        "         }4      "           "      18.00 

200      "        "          %      "           "      27.00 

1341  —      Bullion,  Troemner's.     Iron;  single,  from  sets;  adjusted. 

100  ounce  troy,  each 

200      "        "        "    2.50 

300      "        "        "    3.50 

500      "        "        "    5.00 

1342  —      Troy  Cup. 

4  ounces  down  to  X  ounce 1-50 

8      "  "  %       "      3.00 

16      "  "  %      " 4.00 

32      "  "  ^      "     5.50 

64    "       "       y±    "    9.00 

1343        Troy  Decimal.    For  bullion  scales.     Set  of  %0,  %0,  #0,  */IO, 

5Aoo,  Xoo-  Koo,  %oo'  Xoo  ounces,  per  set. ... 

1344  Metric,  of  japanned  iron.     Nested. 

1  kilogramme  down  to  5  grammes   

2  "  5         "  2.00 

5  '«  "          5         "         400 

10  "  "         5        "          5.50 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


27 


"NEST"  WEIGHT 


"GRIP"  WEIGHT 


1346 


No. 

1345 


Weights,  Gramme,  brass.     In  polished  block. 

20  grammes  down  to  1  centigramme, 


50 

100 

500 

1000 


gramme 


.70 
1.10 
1.60 
2.50 
3.50 


1346 


1347 


Iron,  nickel-plated.  Weights  are  of  iron,  polished  and 
nickel-plated,  making  a  very  handsome  and  substantial 
weight,  at  much  cheaper  price  than  those  of  brass,  and 
vastly  cleaner  and  nicer  to  handle  than  the  ordinary 
painted  iron  weights.  In  sets,  complete  : 
1  pound  and  down  to  Y*  ounce  ;  total  weight,  2  pounds  $ 


2.80 


2"                "           54      ''          "          "        4 
4      "                "          %      "          "          "       8 
5      "                "          #      "          "          "      13 
10      "                "          Y*      "          "          "      23 

Price  of  sincrle  weitjhts   separate  from  full  sets' 

4.00 
5.50 
7.50 
10.75 

.  $       .30 

Yt  ounce,  each        .  .        

•«       «         « 

35 

2       "         "'    

40 

4       •«         "             

45 

8       "         "             

50 

1  pound    "     .                        

80 

2       "         "     .                  

1  .  10 

4       «         «« 

1.60 

5       «•         "                     

2.00 

10       "         "               

3.20 

20       "         " 

6.50 

28 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


8  DRAMS        TROYfAMS 

=  480GRAINS      pAINS  f  RAINS  £f?AINS: 


1365 


1370 


1371 


No. 

1365  Troy,    coin    shape.      Brass,   marked    ounces,    pennyweights 

and  grains. 

YZ  ounce  to  ^  grain,  per  set $  .75 

1  "     %      "        "*"       1.00 

2  "     ^      "           "       1.25 

4            "     ^      "            "       1.50 

8            "     %      "           "       2.50 

1367  Apothecary,  coin  shape.     Brass,  marked  ounces,  drams, 

scruples  and  grains. 

1  ounce   down  to  ^  grain ,  per  set $  1 . 00 

2  "               "      %      "           "     1-25 

4      "               "      %      "           "     1.50 

1368  Metric,  coin  shape. 

1  gramme  to  1  centigramme,  per  set $  .40 

10        "  1  "  "      75 

20        "             1             "                  "     1.00 

1370  Grain,  Aluminum  Wire,  5  to  ^  grain $  .50 

1371  Sheet  Aluminum,  10  to  %  grain .40 

1375  Decimal  Grain,  of  German  Silver  Wire,  one  weight  each 

50,  40,  30,  20,  and  two  of  10  grains,  per  set $  .50 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAIJF. 


29 


HAND    SCALES, 


1376 


1385 


No. 

1376 


1381 


1382 


1385 


Hand  Scales,  Troemner's.     In  lacquered  tin  box,  with  set  of  troy  weights 
down  to  YZ  grain. 

I!**-  ............  1  2  4     oz. 

Bach  ............  $2.50  3.00  3.50 

German,  in  leather  covered  boxes,  with  troy  weights  down 
to  yz  grain. 

size  .............  4  8    oz. 

Each  ............  $2.00  2.50 

In  wood  boxes. 

Siz€V  ............  4  8    oz. 

Bach  ............  $2.00  2.25 

In  oval  tin  boxes. 

S^e.  ............  2  4  8    oz. 

Each  ............  $1.00  1.25  2.00 

In  morocco  boxes,  velvet  lined;    apothecary  weights,   brass 

pans,  silk  suspending  threads. 
Size  .............  5  6    oz 

Bach  ...........  $1.00  1.25 

In  polished   cherry  wood   boxes;    apothecary  weights,  brass 

pans,  silk  suspending  threads. 
Size  .............  5  6    oz 

Bach  ............  $  .75  !  00 

Brass  beams,  horn  pans,  silk  suspending  threads;    fine  steel 
bearings  very  sensitive. 

Beam  ............     3^  4  5  6    in. 

£ans  ............     1#  2  2^  3    in. 

Bach  ............  $1.25  1.50  1.75      '      2.00 


30 


JOHN   TAYLOR   &   CO..  SAN   FRANCISCO,  CAUF. 


GOLD    SCALES, 


HiBBlH 

1386 


1387 


1388 


No. 
1386 


Gold  Scales,  Troemner's,  indicator   pointing    downward;    on   a   polished 
walnut  box,  with  drawer;  very  accurately  adjusted;  a  set  of 
troy  cup  weights  included. 
No..  3  2 


Weight 16 

Beam 7  9 

Diam.  of  pans       3^  4 

Each. $10.00  12.00 


1 
32 
10 

5 
15.00 


0 
64 
13 

6 


ozs. 
in. 
in. 


24.00 


1387 


3 

32 
11 


4 
64 


German,  with  steel  beam,  pans  suspended  with  chains. 

No 1  2  3  4  5 

Weight 8  16 

Beam S^4         §y2 

Diam.  of  pans     4%         4fy 
Each..  .  $8.00     10.00 


15.00     20.00 


5 

96 

15 

7 

25.00 


6 

128  ozs. 
IQYz  in. 

8    in. 
30.00 


1388  Union  Scales,  brass  beams,  indicator  points  upward,  movable  pans;  on 
polished  walnut  box;  scale  can  be  taken  apart  and  packed  in  drawer  of 
box.  These  scales  are  very  accurate  and  useful  for  weighing  small 
quantities  of  gold  dust.  With  troy,  apothecary,  or  gramme  weights, 
coin  shape. 

No 2  1  0 

Beam 534  7  8     in. 

Diameter  of  pans 2  25^  3     in. 


Each. 


$3.50 


5.00 


6.00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAUF. 


31 


SPECIFIC  GRAVITY  BALANCES, 


1390 


1391 


No. 
1390 


Specific  Gravity   Balance,  WestphaPs.    Very  exact  and  quick; 

beam  and  axis  gilded;  for   liquids 
only;  movable  support;    Reimann's 
patent  thermometers;    all  packed  in 
box. 
Complete  with  rider  weights $  15.00 


1391 


Mohr's-  Very  fine  construction. 
Mounted  upon  mahogany  box,  13x 
7x3^  in.,  with  lock  drawer,  which 
contains  all  the  parts.  This  scale  is 
designed  for  both  liquids  and  solids. 
Beside  the  four  sets  of  rider  weights 
which  indicate  the  specific  gravity 
in  1,  ;/0,  #001  andXooo-  it  has  pro- 
vided two  pans,  upon  which  ordin- 
ary weighing  can  be  done. 

Price $  20.00 


32 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


1393 


No. 
1392 


Specific  Gravity  Balance. 


Beam  10  inches  long.  Mounted  upon 
brass  stand;  11  inches  high.  Capable 
of  being  elevated  to  18  inches. 
Hook  tinder  one  pan  from  which  to 
suspend  solids. 

Price,  without  weights $ 


7.00 


1393 


With  beam  13  inches  long,  and  a  rest 
for  it.  All  adjustable  to  20  inches 
high. 

Price,  without  weights $  15.00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


33 


FORCEPS, 


1395 


1398 


1399 


1400-1 


1402 


1404 


No. 

1395 
1396 
1397 
1398 

1399 
1400 
1401 
1402 

1403 
1404 


Forceps.     For  lifting  assay  and   pulp   weights,  blowpipe   beads, 
cupel  buttons,  etc. 
brass,  ivory  tipped,  4  inches  long $     1 . 75 


bone  tipped  ... 

80 

nickel-plated,  with  fine  points  

50 

French  style,  double,  one  end  with  platinum  points, 
5j^  inches  long  

2  25 

English,  of  steel,  platinum  pointed,  4  inches  long  

1  50 

brass,  ends  bent,  4  inches  long  

25 

nickel-plated.  

35 

common  steel  —               4                5              6 

Each         .  .                         $     15               20              25 

8    in. 
50 

Gooseneck's,  nickel  plated,  6  inches  long.  . 

£  .50 

nickel-plated,  with  fine  points,  non-magnetic .35 


34 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


MORTARS. 


1410 


1411 


1412 


1413 


1414 


No. 


1410    Mortars,  iron;  urn  shape;  light;  with  pestles;  turned  inside. 

Capacity,      %             12  pints          y2                1  2     gal. 

Weight..     Sj/2          5*/2       Jfiy2             11              23  45     Ibs. 

Each. ..$.50         .60         .75          1.25          2.25  3.50 


14L1 


Bell  Shape;  heavy,  solid  bottom,  for  grinding  quartz. 
Capacity,    y*          1      2  pt.       %         1         1>£         2          3       4  gal. 
Weight.    4       4^      9^        17        22        37        45        82     90  Ibs. 
Each. ..$.75    1.00    1.25    1.75    2.50    3.00    4.75    7.50    9.00 


1412 


Wedgewood.     Best  quality,  pestles  with  wood  handle. 

No 1          2         3          4          5          6          7         8 

Diam.,  inside  3^       4^      5#         6        6%       7}^       8^4  9#  in. 

Each $.75     .90    1.00     1.25     1.50     1.75     2.50  3.00 


1413 


porcelain.     With   pestles,  for   grinding   fluxes,  and    for  liquids. 
Unglazed  inside,  glazed  outside. 

No 0              1            2            3            4          5  6 

Diam., inside  Q5/8          5^        '  4S/8          4           3^       2^  2*4  in. 

Each $1.50       1.25       1.00        .85        .75       .60  .50 


1414 


glass.     With  pestles. 

Capacity 1  2  4  8  16  32  oz 

Each $.25         .30  .40  .60  .75  1.00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAUF. 


35 


1415 


1416 


1417 


1418 


No. 

1415 


Mortars,  Diamond.  Plattner's  form,  for  crushing  small  quantities 
of  ore  or  for  flattening  silver  buttons;  made  of  the  best 
tool-steel,  hardened. 

Small 

Large 


4.00 
6.00 


1416 


Leed's  form,  without  ring $     2 . 00 


1417 


Agate,  with  pestles,  for  grinding  small  specimens  of  ore. 

Diameter.      \%          2         2^         3         3^         4         4^     5  in. 
Each....     $1.50    2.00     2.75    4.00    5.50     7.50    9.0012.00 


1418 


amalgam.  Buck's  patent  of  cast  iron.  By  the  rotation  of  the 

muller  a  large  sample  of  quartz  can  be  ground,  in  contact  with 
quicksilver. 

Diam 6^             8^             8%  10^  in. 

Weight 30              40              72  120  Ibs, 

Wt.  of  muller       16              28              42  72  Ibs. 

Each $6.50         7.50          9.00  12.00 


36 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


1420— Cut  No.  1 


1420— Cut  No.  2 


1421 


1425 


No. 

1420 


Mortars,  crasher  and  pulverizer  combined. 

Diam 10>^in. 

Height 8^  in. 

Weight  complete 100  Ibs. 

"      muller  only.   65  Ibs. 
Each..  ..$  25.00 


Cut  No.  1  illustrates  the  Crusher  aud  Pulverizer  with  both  handles  in  position,  making  it 
very  easy  to  lift  out  the  pestle  to  clean  the  mortar.  Another  use  for  the  handles  in  this  position 
is  when  crushing  very  hard  or  large  pieces  of  material,  take  hold  of  both  handles  and  work 
backward  aud  forward,  (or  seesaw),  which  will  crush  large  pieces  much  easier  than  with  one 
handle,  and  as  soon  as  the  material  is  crushed  sufficiently  take  out  extra  handle  and  go  on  with 
the  rotary  motion. 

A — Cover.  B — Rotating  pestle.  C—  Casing  or  shell.  D — Handle,  of  which  there  are  two. 
£ — Crushing  post,  which  is  corrugated  and  slightly  oval,  producing  great  crushing  power. 
/''—Conical  corrugated  opening  in  center  of  rotating  pestle,  where  material  is  introduced. 
G — Spout  where  material  is  discharged  as  fast  as  pulverized.  H—  Is  one  of  four  lugs  on  the  side 
of  rotating  pestle,  which  carry  the  pulverized  material  to  spout. 

The  operation  is  as  follows:  The  cover  being  removed,  the  coarse  material  is  fed  in  at  f,  and 
pieces  as  large  as  will  go  in  the  opening  can  be  crushed  (unless  of  an  exceptionally  hard  charac- 
ter). As  the  material  is  gradually  crushed,  it  works  down  to  bottom  of  conical  opening,  passing 
under  the  pestle,  where  it  is  pulverized.  The  centrifugal  force  carries  the  product  to  the  sides, 
where  it  is  caught  by  the  lugs,  h,  which  carry  it  to  spout,  g,  and  discharge  it. 

No. 
1421 


Backing   Board,    circular   21    inches   in   diameter,    1    inch   deep, 
planed  for  grinding    fine.     Weight,   with    9*4 
pound  muller,  95  pounds. 
Price . . 


$    9.00 


1425 


and   muller,  upper   surface   planed,  flanges  at  the   side, 
curved  muller. 

Size 18x20  20x24  24x36  in. 

Each $10.50  13.00  1750 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


37 


1426 


1432 


1430 


No. 
1426     Bucking  Board  and  tnuller,  unplaned,  on  trunnions  for  tipping. 

Size 7x28  15x28  in. 

Each $6.50  9.00 


1430     Brushes,  for  dusting  mortars;  round. 

Diameter 1>£ 

Each $  .90 


n. 


.75 


1431 


Flat,  for  cleaning  bucking  boards. 

Width     3 

Each $  .  50 


4  in. 
.75 


1432 


bench  duster.     8  inches  long;  bristles,  3  inches. 

Each $       .75 


38 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAUF. 


TAYLOR'S    PATENT   ROCK    FINE   CRUSHER. 


FIG.  I. 


1433 


FIG.  2. 


1433 


No. 

1433  Rock  Fiue  Crusher.  Taylor's  Patent.  For  assayers,  prospectors  and 
samplers,  for  working  specimen  ores,  crushing  old  crucibles,  etc. 
The  design  of  this  small  machine  is  to  enable  a  person  quickly  and 
easily  to  bring  by  hand  power  to  fine  powder  the  hardest  ores, 
to  be  assayed  or  sampled,  and  readily  crush  a  larger  sample 
than  can  be  done  in  a  mortar.  Each  machine  has  a  cover  (not 
shown)  to  prevent  pieces  of  ore  from  flying  out,  and  is  furnished 
with  a  wrench  and  dust  brush.  Kxtra  jaws  and  other  parts  can 
be  had.  Weight,  complete,  100  pounds. 

Price,  complete $  25.00 

Extra  parts:  B  and  C,  set  of  hard  jaws,  $1.25;  D,  set  of  hard 
side  straps,  drilled,  $1.50;  E,  set  of  hard  side  plates,  50  cts. 
per  pair;  A,  lever,  drilled,  $1.50. 

NoxB — The  hard  jaw  C  is  sometimes  called  the  Shoe.     The  hard  jaw  B  is  sometimes  called 
the  Die. 

Send  for  special  circular  describing  this  crusher. 


1434  Crusher.     Bosworth.     For  laboratory  and  assayers'  use. 

Hand  Crusher $  30.00 

1435  "  "         with  pulley  attachment $  32 .00 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


1436-40 
No. 

1436  Quartz  Mill,  one-stamp.     With  Day's  Vacuum  attachment.     The 

stamp  is  4  inches  in  diameter  and  drops  with  a  force  of  125 
pounds.  The  stamp  is  raised  3  inches  by  the  cam.  The  total 
weight  of  the  mill  is  335  pounds,  and  the  whole  height  from 
the  floor  is  5  feet.  Send  for  special  circular  describing  this 
quartz  mill. 

Price "...  $  75.00 

1437  Copper  Plates,  silver-plated,  for  above,  12x60  inches $  10.00 

1438  Screens,  Russia  iron,  for  above,  per  set $     1 .50 

1439  Sluice  Box,  for  above  mill,  with  copper  plate  four  feet  long  by  one 

foot  wide,  silver-plated. 

Price $     8.00 

1440  Concentrator.     For  stamp  mill,  fourteen  inches  wide  and  eighteen 

feet  long,  including  sluice  blanket $  15 .00 


40 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CAUF. 


CYANIDE    PLANT. 


1441 


No. 

1441  Cyanide  Plant.  The  above  cut  is  our  latest  design  of  a  small 
Cyanide  Plant,  having  a  capacity  of  100  pounds  of  ore.  The 
small  tank  shown  at  the  highest  elevation  is  to  be  used  as 
solution  tank,  while  the  tank  just  below  it  is  intended  for 
leaching  tank  and  is  fitted  complete  with  false  bottom  and 
duck  filters.  The  zinc  box  shown  below  the  leaching  tank 
has  six  compartments  and  is  fitted  with  wire  screens  ready 
for  use.  The  lower  tank  is  the  sump  tank,  which  is  provided 
with  an  outlet  which  facilitates  the  drawing  off  of  the 
weakened  solution  to  be  transferred  to  the  solution  tack  again 
where  it  is  made  up  to  full  strength.  The  pipe  connection 
between  the  different  tanks  has  been  carefully  studied  out 
and  has  been  arranged  with  the  greatest  convenience.  A  stop 
cock  will  be  noticed  just  below  the  solution  tank,  a  similar  stop 
cock  between  the  outlet  from  the  leaching  tank  and  the  zinc 
precipitating  box.  The  solution  enters  the  leaching  tank 
through  the  bottom  and  is  drawn  off  through  the  same  pipe; 
but  to  facilitate  the  discharging  of  the  leached  tailings  a  union 
connection  will  be  found  just  below  the  leaching  tank. 


JOHN   TAYLOR   &    CO.,  SAN    FRANCISCO,  CALIF. 


41 


SAMPLERS, 


1443 


1442 


1445 


1446 


No. 
1442 


This  can  be  easily  disconnected  and  the  leaching  tank  may  then 
be  lifted  off  and  the  contents  dumped  out.  In  a  similar  way  the 
zinc  box  can  be  easily  removed  by  giving  the  elbow  a  quarter 
turn;  the  entire  zinc  box  can  then  be  taken  out  and  the  contents 
of  each  compartment  can  be  removed  without  any  further  diffi- 
culty. The  tanks  have  all  been  painted  with  a  special  acid- 
proof  paint,  but  before  putting  the  same  to  actual  use  we  would 
advise  filling  the  tanks  with  water  to  enable  them  to  swell  up. 
as  otherwise  considerable  gold  solution  might  be  lost  before  the 
tanks  are  tight. 

Price,  complete $  50.00 

Samplers,  Tin,  with  handle. 

6x  8  in.,  6  trays  yz  in.  wide $     .75 

9x12    "5      "     %    "      "  1.00 


1443 


and  Scoop. 

Size 

Each  . 


6x8 
.75 


9x12 
1.00 


10x10  in. 
1.00 


1445 


or  Tryer. 

handle. 
Each  . 


Of  sheet  iron,   19  inches  long,  with  wood 


$     .75 


1446 


Cast  Steel,  polished  handle. 

Length 18  21  24  in. 

Each $      .90  1.00  1.25 


42 


JOHN   TAYLOR  &   CO.,  SAN   FRANCISCO,  CALIF. 


SAMPLING    PAPER,   SHEET    RUBBER, 
BAGS,    BOTTLES. 


1455-6 


1475 


No. 

1450 


1455 


1456 


1460 


1465 


1470 


Paper,  Glazed,  Black.     For  sampling  pulverized  ores,  etc. 


.50 


Rubber,  Pure  Sheet.    For  mixing 
Size  

ore  samples. 

18x18 

36x36 

in. 

Each       

.  $       .85 

2.50 

Size  

18x18 

36x36 

in. 

Each       

$       .30 

1.00 

50  in.  wide   per  roll  of  12 

running  yards  

.   $     6 

00 

One  sheet,  50x50  in 

75 

Bags,  Ore  Sample.     Manila  paper 
Width,  inches  4 

,  strong. 
567 

8 

I/ength,  inches  6% 

7>£           8y2           9# 

11 

12 

Per  1000  .                  .  $  2  .  50 

3.00        3.50        4.00 

4.50       6 

.50 

Bags,  rope  manila.    Extra  heavy,  for  ground  ores,  with  improved 
metal  fastenings. 

4^4x3      inches,    1  ounce,  per  100 

2 
6'  ' 


x4 


x5 


7 
8 

9  x5' 

10  x6' 


1471 


duck. 

No.  1,  5     x  8 

2,  6  xlO 
3,7^x12 
4,  8  x!4 
5,9  x!7 
6,  10  x20 


4 
6 
8 

10 
12 


inches,  per  100, 


1475    Bottles. 


Wide  mouth,  with  flat  corks,  for  sampling  ground  ores,  etc. 

Ounces 2  4  6  8  12 

Per  dozen $   .35         .40         .45         .50         .75 


.65 

.80 

.95 

1.05 

1.20 

1.35 

1.60 


5.00 

6.00 

8.50 

10.00 

12.50 

16.00 


16 
1.00 


JOHN  TAYLOR   &    CO.,  SAN   FRANCISCO,  CALIF. 


43 


SPATULAS,    SCOOPS. 


1490 


1491 


1497 


1498 


No. 


1490     Spatulas,  steel,  with  wood  handle. 

Length  blade ....       3         4       5       6       7       8       9       10       12    in. 
Each.  .  $   .25   .30  .35   .40   .50  .60   .75  1.00  1.25 


1491 


porcelain,  double  end. 
Length  ......... 

Each  ........... 


7^          S%        11% 


14    in. 


$.40         .50         .60         .75         1.00 


1492 


Single  end. 
Length 
Each  . 


$  -40 


.50 


11% 
.60 


14  in. 
1.00 


1493 


bone. 

Length 
Each  . 


5  678^         10^  in. 

$   .10         .15         .20         .25         .30 


1494 


hard  rubber. 

Length 

Each  . 


6 

$   .25 


7    in. 
.35 


1495 


horn. 

Length 
Each  . 


7 
$   .15 


in. 


.20 


1497    Scoops,  horn. 

No.  .. 
Bowl. 
Each. 


1498  Spoons,  horn. 

No. .  .  . 

Bowl. 

Each. 


123 
#x2#     3^x3     4%x3 
$   .10  .10  .10 


n 


.15 


234 

2x1%     2%xiy2      3^x2  in. 
$   .10  .10  .15  .20 


44 


JOHN   TAYLOR    &   CO.,  SAN    FRANCISCO,  CALIF. 


WASHING    PANS    AND    HORNS,    BATEA. 


1500 


1507 


No. 
1500 

1501 
1502 

1503 
1504 
1505 
1506 

1507 

1508 

1509 
1510 


1510 


Gold  Fans,  Miners',  Russia  iron.    Seamless,  16^  inches  diameter, 

extra  heavy,  per  dozen 

Polished  iron,  per  dozen 

Iron,  with  bottom  and  half  up  the  sides  of 
heavy  copper,  each 


Silver-plated  inside, 
All  copper,  each .  . . 
Silver-plated,  each.  . 


Horns,  Miners'. 


Batea,  wood. 


1849  style,  made  of  horn,  finely  finished,  smooth 
inside,  selected,  each 

Rubber.  Made  of  black  rubber,  hard  and  flexi- 
ble, 9^  inches  long.  The  black  color  enables 
one  to  quickly  detect  the  smallest  particle  of  gold . 

Copper.  Same  size  and  shape  as  above,  for 
washing  with  quicksilver 

Of  Russia  Iron,  9>£  inches  long 

Of  Spanish  cedar,  well-turned,  the  center    burnt  to 
colors. 

Diameter 12  17    in. 

Each $1.50  2.00 


$  10.50 
6.00 

3.50 
5.00 
4.50 
6.50 

$     1.00 
.75 


1.25 

.50 

show 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


45 


SIEVES, 


1515 


1519 


No. 
1515 


60  70  80  100  120  150 
.60  .75  .75  1.00  1.25  1.50 
.90  1.00  1.10  1  25  1.50  1.75 


1516 


1517 


Sieves.     Brass  wire,  tin  frame. 

No 10    20    30    35       40      50 

Diameter,  5  in. $  .50  .50  .60     .60     .60     .60 

6".     .65.70.75     .75     .80     .85     

8"  .     .75  .80  .90  1.00  1.00  1.10  1.20  1.30  1.40  1.50  1.75  200 

Sieves.     Tin  frame,  with  cover  and  pan  bottom  to  collect  dust. 

No 10      20      30      40      50    60      70      80     100     120    150 

Diameter,  5  in..    $.65     .65     .75     .75     .851.001.151.251.401.60180 
8  "  .  .      1  25  1.25  1.25  1.25  1.35  1.50  1.75  2  00  2.25  2.50  2.75 
Larger  sizes  made  to  order. 


1517    Sieves. 


1518 


1519 


Tin  Frame,  5  inches  diameter,  in  sets  of  8,  with  one  cover 
and  pan  bottom,  interchangeable.  Convenient  for  sepa- 
rating powdered  ore  into  different  grades  of  fineness.  Nos. 
10,  20,  30,  40,  50,  60,  80,  100;  height,  when  together,  10 
inches. 

Price,  per  set 

3  inches  diameter;  price,  per  set  of  3  sieves   from  10  to 
100  mesh .  . 


5.00 
'1.50 


Wooden  rim. 

Per  dozen .  .          .All  Nos.  to  70 


5  inch 
6 


9 

10 
11 
12 


$6.50 

7.00 

8.00 

9-00 

10.50 

12.00 

14.00 

17.00 


No.  80 

7.00 

8.00 

9.50 

11.00 

13.00 

16.00 

19.00 

24.00 


No.  90 

9.00 

9.00 

10.50 

12.50 

15.00 

19.00 

23.00 

27.00 


No.  100 
10.00 
11.00 
13.00 
16  00 
20  00 
23 '00 
27 '00 
33  00 


Larger  sizes  made  to  order. 


46  JOHN   TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


FURNACES. 


1525 


No 
1525 


Furnaces,  Assay.     California    pattern  ;    for    muffle    and   crucible 
work.    Iron,  brick,  lined,  furnished  with  cast  iron  cover 
and  sand  bath. 
Number  ......  12  34 

Internal  diam  .  9  10  10  12 

Height  .......         20  23  25  28 

Weight  ......         52  75  125  205 

Uses  muffle...   8x4^x3  11x4^x3^   10^x5^x3^  12x6x4 
Bach  ........  $9.00  12.00  15.00          20.00 


1526 


1528 


1531 


n. 


Ibs. 


inch  interior  diameter.    Made  to  order;   price  ......  $  50.00 

12       in.  furnace  takes  12     x  6     x4      or  12x5^x3^  in.  muffle 
10       "          "          "       lO^x  5%xSj/8  "    11x4^x3^    " 
9  "  8     x  4}Jx3  muffle 

15^    "  "         9     x!5     x6  high  side  muffle. 

Melting,  without  muffle  hole. 

12  in.  interior  diameter  ..............................   $  19  .  00 

14  "         "  "        ..............................       30.00 

The  12  in.  furnace  takes  a  No.  16  black  lead  crucible. 

'  '     14  "  "  "          '  '       25       "        '  '  " 

Extra  parts  for  No.  4321 

12  in.  10  in.  10  in.  9  in. 

heavy.  heavy.  light.  light. 

Grate  bars,  wrought  iron  .  .   $     .  75  .60  ....  .... 

Tripod  to  support  grate  bars       1  .  50  1  .  25  ....  .... 

Cast  iron  grate  and  tripod  ......  ....  1  .  50  1  .  25 

Cast  iron  cover  ...........        1  .  75  1  .  50  1  .  50  ____ 

Sandbath  ...............       1.25  1.00  1.00            .75 

Sheet  Iron  Pipe,  24-inch  lengths;  each  .........  25  to  35  cents 

Cast  Iron  Elbows  for  12-inch  round  furnace;    each  ----  $     1  .50 

Sheet    "          "         "   12-  "         "  "  "    25  to  35  cents 


JOHN    TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


47 


1535 
No. 

1535  Furnaces,  John  Taylor  &  Co.'s.  Improved  combined  crucible  and 
muffle  furnace.  Patented.  Made  of  thick  sheet  iron, 
12  inches  square  inside  measurement,  lined  with  heavy 
brick  2  inches  thick.  Complete  weight,  250  pounds. 
It  takes  a  6x12x4  muffle,  allowing  the  use  of  6  No.  9 
Battersea  or  equivalent  size  crucibles  while  the  muffle 
remains  in  place.  Can  also  be  used  as  a  melting  furnace 
and  will  hold  a  No.  16  black  lead  crucible.  The  front 
of  this  furnace  is  fitted  with  wrought  iron  doors  for  the 
muffle  and  ash  pit,  double  cast  iron  feed  doors  and 
patented  cast  iron  grate  bars,  which  can  be  removed  by 
inserting  a  square  poker  into  openings  at  the  end  of 
the  grate  bars  to  lift  them  out.  The  top  of  the  furnace 
is  fitted  with  a  cast  iron  frame  with  two  flat  cast  iron 
covers  (asbestos  lined)  sliding  right  and  left  from  the 
center  on  a  rail.  If  so  ordered  the  furnace  can  be 
made  with  body  in  four  separate  sections  for  easy 
transportation,  and  fastened  together  with  bolts. 
Price $  30.00 


1536 


Extras  for  above. 

Grate  bars,  per  set 

Covers 

Oval  elbow,  heavy  iron,  6  inches. 


3.00 
2.50 
1.25 


48 


JOHN   TAYLOR    &   CO.,  SAN    FRANCISCO,  CALIF. 


1537 


1538 


1540 


No. 
1537 


Furnace,  Battersea  Portable.     For  melting  gold,  silver,  copper,  etc.  Made 
of  fire  clay  bound  with  iron.     For  assayers'  use. 


1538 


1540 


Size 
B.  . 
C.. 
D. 


Diam. , 
Inches. 
10 


Height, 
Inches. 

20 

22 

26 


Weight, 
Pounds. 

67 

90 


Each. 

10.50 
12.50 
15.00 


Cupelling,  Battersea.     Of  fire  clay,  iron  bound.     Without  base. 
No.  Height.    Diameter.        Size  Muffle.  Price. 

C 27  Uy2  9x5^x35/g  in.       $  22 . 00 

E 29^  16jE<         12x6     x4       "  24.00 

F.  30  17^         14x8     x5       "  31.00 


Bosworth.  Of  clay,  in  three  sections,  securely  bound 
with  heavy  iron  bands.  Takes  a  9x15  or  10x16  high 
side  muffle. 

Price,  with  1  muffle $  40.00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


49 


FURNACES,  BLOWPIPES. 


1542 


1550-1 

No. 

1542  Furnace,  "Jackass."  A  very  complete  and  satisfactory  portable  fur- 
nace, weighing  100  pounds.  It  is  made  of  clay,  in  one 
piece  and  securely  bound  with  steel,  doors  asbestos 
lined.  Will  take  muffle  6x12x4  inches. 

With  1  muffle $  20.00 

Extra  muffle 1 .00 

Extra  grate 1 . 00 


1550 


Hoskins'.     Blowpipe   No.    2,    for  gasoline,    with   half- 
gallon  tank,  made  entirely  of  brass,  very  strong $  23.00 


1551 


Blowpipe   No.  3,    with    1-gallon   tank,  otherwise  same 
as  No.  2 $26.00 


50 


JOHN   TAYLOR    &    CO.,  SAN    FRANCISCO,  CALIF. 


1552-3 


1555 
No. 

1552  Furnace,  Blowpipe  No.  4,  with  6-gallon  tank,  made  of  heavy  cop- 

per, suitable  pump,   pressure  gauge,  10  feet  of  pipe, 

elbows,  etc.,  and  two  burners,  complete $  50.00 

1553  Taylor's  Special  Blowpipe.     Eight-gallon  tank,    made   of    heavy 

galvanized    iron,    guaranteed   to   stand    100   pounds  pressure. 
Complete,  with  one  coal-oil  or  gasoline  burner $  25.00 

1554  Burners,  extra  for  above,  each $     6 . 00 

1555  Coal-Oil  or  Gasoline  Burner.   (Patented.)   Our  new  heating  burner 

for  assayers  and  chemists,  or  for  brazing,  in  which  coal-oil  at 
33°  to  45°  Beaume,  and  150°  fire  test  can  be  used  as  fuel.  This 
burner  will  melt  an  assay  in  a  crucible  or  scorifier  and  will 
cupel  in  a  muffle.  One  great  advantage  of  this  burner  over 
others  is  that  it  can  be  used  with  either  coal-oil  or  gasoline  and 
is  intended  to  take  the  place  of  the  gasoline  burner  now  in  use. 
It  has  been  thoroughly  tested.  We  own  the  patent  and  are 
ready  to  furnish  this  burner  singly  or  in  quantities. 
Each $  6.00 

NOTE. — Use  74°  gasoline  in  above  burners. 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


51 


FURNACES. 


1556-1; 


1560— Back  View 


1560— Front  View 


No. 


1556    Furnace,  Hoskins'  Muffle,  No.  2,  taking  a  muffle  8x4^x3  inches. 

Price  $  10. 00 

Extra  muffles,  each .65 


1557 


Muffle,  No.  3,  taking  a  muffle  10x6x4  inches. 

Price $  15.00 

Extra  muffles .  .  1 . 00 


1560 


Muffle,  No.  4:.  Takes  a  high  side  muffle  9x15x6 
inches,  which  requires  a  blowpipe,  (Catalogue 
numbers  1552-3),  including  all  special  interior 
fire  bricks,  with  full  directions  for  setting  and 
bricking  up  with  common  brick. 

Price,  including  muffle $  25 . 00 

Extra  muffles .  .  1 . 65 


52 


JOHN   TAYLOR    &   CO.,    SAN   FRANCISCO,  CALIF. 


1565-6 


1567-8 


1570 

No. 

1565j| Furnace,  Hoskius'  Crucible,  No.  1,  taking  20  gramme  crucibles, 
or  equivalent  sizes,  4  inches  diameter,  5/4  inches  deep 
inside  .  . 


$     4.00 


1566 


1567 


1568 


Crucible  No.  2,  taking  Battersea  "  K  "  round  crucibles, 
or  equivalent  sizes,  5  inches  diameter,  6j4  inches  deep 
inside .  . 


$     5.00 


Crucible  No.  3,  long  form,  taking  two  20  gramme  cruci- 
bles, or  equivalent  sizes.    A  very  effective  furnace ....   $ 


1570 


7  00 


Crucible  No.  4,  taking  four  No.  9  crucibles,  or  equiva- 
lent sizes.  This  is  a  very  efficient  furnace  for  large 
quantities  of  work.  This  furnace  can  also  be  used  for 
melting,  and  will  take  a  No.  6  black  lead  crucible .  ...  $  12.00 

Combination  No.  1.  On  the  right  in  the  above  cut  is 
shown  the  furnace  prepared  for  crucible  work.  By 
lifting  off  the  cover  and  substituting  the  part  with  the 
muffle  opening  and  sliding  in  the  muffle,  the  furnace 
is  prepared  as  shown  on  the  left.  A  scorification  or 
two  cupellations  may  be  made  in  this  furnace  with  per- 
fect satisfaction.  Weight,  complete,  is  24  pounds.  The 
muffle  is  6x3^x2^  and  the  crucible  furnace  is  the 
same  as  cut  No.  1565,  No.  1. 

Price  .  .  $    7.00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


53 


1578 


1578— Sectional  View. 


No. 


1571     Furnace,  With  No.  2  blowpipe $  30 .00 


1572 


3     " 


$  33.00 


1576 


Covers   for  No.  3  and  4  crucible  furnaces,  rectangular 

form ;  per  pair $     1 . 00 


1577 
1578 


Plug  for  C  or  F  muffle  furnace,  each 


.50 


Combination,  No.  5,  takes  1  crucible,  20  grammes  or  F, 
or  equivaient  size,  and  a  muffle  6x3^x2^,  same  as 
combination  furnace  No.  1,  and  measures  12  inches  in 
length,  8^4  inches  in  width  and  16  inches  in  height. 
Weight,  complete,  30  pounds;  packed,  40  pounds. 

Price  $  10.00 


1579 


Combination,  No.  6,  takes  4  crucibles,  20  gramme  or  F, 
or  equivalent  size  (same  as  Crucible  Furnace  No. 
4),  and  muffle  10x6x4  ( same  as  No.  3  Muffle 
Furnace),  and  measures  20^  inches  in  length,  12 
inches  in  width  and  19  inches  in  height.  Weight, 
complete,  95  pounds;  packed,  125  pounds. 

Price $  20.00 


For  assayers  or  prospectors  who  desire  a  portable,  self-contained  furnace,  a  Combination 
Furnace  can  be  recommended.  The  combination  furnaces,  Nos.  5  and  6,  have  the  advantage 
of  any  other  form  of  combination  furnaces  heretofore  suggested,  inasmuch  as  the  introduction 
of  a  cold  crucible  into  the  crucible  chamber  interferes  in  no  way  with  operations  being  car- 
ried on  in  the  muffle.  It  is  economical  because  all  of  the  heat  is  utilized.  The  crucible  chamber 
is  always  hot  and  ready  for  use,  independent  of  what  may  be  going  on  in  the  muffle.  The  muffle 
is  provided  with  a  small  chimney  to  create  a  current  of  air  through  the  muffle  and  needs  no 
further  provision  for  draft,  though  the  furnace  may  be  connected  with  a  chimney,  if  desired,  in 
which  a  damper  will  probably  be  necessary.  Both  furnaces  are  provided  with  a  shelf  (not  shown 
in  the  cuts)  to  protect  the  muffle  entrance  from  the  heat  of  the  burner  and  serve  as  a  resting 
place  for  cupels,  etc.,  after  and  before  use  in  the  muffle.  This  will  be  found  to  be  a  great  con- 
venience; but  no  extra  charge  is  made  when  purchased  with  a  furnace.  These  furnaces  require 
but  one  burner. 


54 


JOHN    TAYLOR    &    CO.,  SAN    FRANCISCO,  CALIF. 


No. 


1580-1 


1582-3 


1580  Furnace,  Combination  Crucible  and  Muffle  Furnace.  Takes 
4  Battersea  crucibles  No.  9,  or  equivalent  sizes,  and 
one  muffle  10x6x4 $  20.00 


1581 


Same.  With  Taylor's  blowpipe,  including  gasoline  or 
coal-oil  burner,  pipe  connections,  etc.,  (No.  1553), 
complete $  45 . 00 


1582 


For  2  Battersea  crucibles  No.  9,  and  one  muffle  8x4^x3,  $  16.00 


1583 


Same.  With  Taylor's  blowpipe,  including  gasoline  or 
coal-oil  burner,  pipe  connections,  etc.  (No.  1553),  com- 
plete   $  41 .00 


JOHN    TAYLOR    &   CO.,  SAN    FRANCISCO,  CALIF.  55 


1588— No.  40  A 
No. 

1585  Furnace,  Fletcher's  Crucible,  No.  40.    This  furnace  consists  of 

a  simple  pot — for  holding  the  crucible — with  a  lid,  and 
a  blowpipe,  all  mounted  on  a  suitable  cast  iron  base.  Gas 
from  a  ^5-inch  supply  pipe  will  work  it  efficiently.  This 
furnace  uses  about  ten  cubic  feet  of  gas  per  hour,  and 
will  take  a  black  lead  crucible  No.  00. 
Price,  without  blower -. $  3 . 00 

1586  Extra  Parts  for  above: 

Furnace  body $       .75 

Furnace  body  and  cover 1.10 

Burner  only 1 . 00 

Stand,  without  burner .90 

Black  lead  crucible  No.  00 .25 

1588  No.  4:0  A,  with  improved  gas  burner.  This  burner  is  made 

of  the  same  pattern  as  that  used  with  the  "  Perfected" 
Injector  Furnace.     It  is  almost  noiseless  in  its  action 
and  works  with  a  very  small  gas  supply;  ^6-inch  gas 
supply  pipe  required. 
Price,  without  blower $     3 . 50 

1589  Extra  Parts  for  above: 

Furnace  body $       .75 

Furnace  body  and  cover 

Burner  only 1 . 50 

Stand,  without  burner 90 

Black  lead  crucible  No.  00 25 

1590  No.  40  B,  with  improved  burner,  for  refined  petroleum; 

gives  almost  as  good  results  as  the  gas  furnace. 
Price $    4.50 

1591  Extra  Parts  for  above: 

Furnace  body $       -75 

Furnace  body  and  cover 1 . 50 

Burner  only 

Stand,  without  burner 

Black  lead  crucible  No.  00 -25 

NOTE.— For  foot  blowers  for  Fletcher's  furnace  see  Nos.  1585-1590. 


56  JOHN   TAYLOR   &    CO.,  SAN   FRANCISCO,  CALIF. 


ASSAY    CRUCIBLES. 


1600  1602  1604 

Attention  is  drawn  to  the  description  of  the  crucibles  below  (Exterior  Dimensions), 
and  in  ordering  these,  particulars  should  be  given,  to  prevent  errors. 

No. 
1600     Crucibles,  Battersea,  round  form. 

No DBF      G      H       J       K       L       N       P       R 

Height 4     4%    5     5%     5%     6%     7%     8tf     9%  11      13  in. 

Diameter....        2%  2%    3     3%     3%     4%     4%     5>{     6%  7#     9%  " 

Price,  perdoz  $  .50  .75  .85  1.15^1.25  2.00  2.60  3.00  4.50  7.50  13.00 

1601 Covers,    "  .40  .50  .50    .60     .65     .75  1.00  1.10  1.25  1.75    2.50 

1602  Crucibles,  triangular  form.     Same  form  as   the   Hessian  crucibles,  more 

uniformly  made,  and  much  superior  in  quality. 

T  corresponds  in  size  to  large  5s. 

U  "  "     "    "  small  5s. 

No T  U  V 

Height 4  3^  3# 

Width 3#  3#  2^ 

Price,  per  dozen $  .90  .60  .50 

t 

1603  Covers,     "        .50  .50  .40 

1604  Battersea  Fluxing. 

No  ....         7  8  9  10  12  15  18 

Perdoz.    $.85      1.00      1.25       1.75        2.75        450        6.50 

1605         Covers. 

Perdoz.  $.60        .75        .75         .85         1.00        1.25        1.50 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


57 


1609 


1610 


No. 

1606  Crucibles,  Colorado  Pattern.    Soft  burnt;  so  called  soft;  low  form,  straight 

sides,  to  fit  inside  of  muffles,  as  per  cut  No.  1610. 

No A2  Al  B 

Capacity  5  10  20  grammes. 

Height 25/8  3^  3^  in. 

Width 2^  2^6  3       " 

Per  dozen $    .40  .50  .60 

1607  Hard  Burnt,  so  called  hard.     Prices  same  as  No.  1606. 

1608  —      CoTers A2  Al  B 

Per  dozen $    .30  .40  .50 

1609  Muffles,  Battersea, 

In.  Long.     In.  Wide.     In.  High.  PerDoz. 

6  4  3  $8.00 

C— Hoskins',  small....       8  4#  3  8.00 

K 9  5^  3#  11.00 

F— HoskinsMarge....  10  6  4  13.50 

9X  4^  3^  10.00 

H,  or  10^-in.  Mint  .  10??  5#  3^  12.00 

G 11  4#  3^  10.50 

12-inch  mint 12  5#  3^  13.50 

J 12  6  4  15.00 

K 14  8  5  18.00 

L 15#  8%  5^  20.00 

1610  High  Sides.  Per  Doz. 

L.  L.     9x15x6      in $  20  00 

N.  N.  10x16x6^  " 25.00 

P.  P.  11x18x7^  " 30.00 

R.  R.  12x18x7^  " 33.00 

S.  S.  12x19x7^  " 33.00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 

SCORIFIERS,    ROASTING    DISHES, 
ANNEALING    CUPS. 


1615 


1616 


1617 
No. 

1615  Scoriflers,  Battersea. 

Outside  diameter 1%            2           2#  2^         2^  3      in. 

Per  1000 $12.00     12.00     12.00  13.00  16.00  20.00 

Barrel  contains  about 3500      3800  2400  2200  1600 

Barrel  weighs,  each  about,  pounds.       300        425          475        500  525 
Special  price  in  barrel  lots. 

1616  Roasting  Dishes,  Clay,  Battersea. 

Diameter  ....  2^  3  4  5  6  8     in. 

Per  dozen....        $  .75         1.00        1.25         1.50        2.50        6.00 

1617  Annealing  Cups,  Battersea.    These  are  perfectly  smooth  and  of  correct 

porosity. 

ABC 

Height 1/i  1-HJ 

Diameter  at  top l/^  l/^  l/^ 

Per  dozen..  $1.00         1.00         1.00 


1618 


Covers,  per  dozen 


.25 


.25 


.25 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAIJF. 


CRUCIBLES,  MUFFLES, 


1619 


1625 


1623 


No. 
1619 


1620 
1621 


1622 
1623 


1624 
1625 


Crucibles,  Clay,  Denver. 

Capacity 5 


Height 
Diameter. 


25/8 
23/8 

Per  100 $2.50 

Covers, per  100.   2.25 


10 
3 

25/8 

3.00 
2.25 


12 

3.00 
2.25 


20 

33^ 

3 

4.00 

3.50 


30 

6.00 
4.00 


Clay,  Denver. 

No 

Height 

Diameter  .  , 
Per  100.. 


French  pattern. 
6 
4 

$3.50 
Covers,  per  100.  2.25 

Clay,  Denver,  for  open  furnace. 

No D         E        F 

Height 4        4}^       5 

Diameter 2^        3       3^ 

Per  100 $3.50    5.50  600 

Covers,  per  100 .    2.25    3.50  4.00 
Muffles,  Clay,  Denver. 


G 

55/8 
33/8 

8.00 
5.00 


7.00 
2.25 

J 

65/8 

12.00 
6.00 


1621 


40 

55/6 

8.00 
5.00 


grammes 
inches 


9 
534  in. 

3     " 
8.00 


3.50 


K 

45^ 
13.50 

8.75 


Width 

Long 

3%  

6 

^A  

8 

6     

10 

6     

12 

8     

12 

8     

14 

9     

15 

10     

16 

11      

18 

12      

18 

12     

19 

1234 

21 

14 

18 

High 
2^  in. 

3  Hoskins'. 
37/£U.  S.  Mint. 

4  Hoskins'. 
4 

5  high  sides,  very  roomy. 
51/         <(  " 

53A 
63/ 


834 

7 


L 

8 

24.00 

8  75 


Each 

$  .50 

.60 

.75 

.75 

.90 

1.15 

1.25 

1 . 50 

1.75 

2.25 

2.50 

2.50 

2.75 

2.75 


n. 


60 


JOHN  TAYLOR   &  CO.,  SAN   FRANCISCO,  CALIF. 


SCORIFIERS,    ROASTING    DISHES, 
ANNEALING    CUPS. 


1626 


No. 


1627 


1626    Scoriflers,  Clay,  Denver. 

Diameter 2^         2)^          2^ 

Price,  per  100..  $    1.20      1.30       1.60 
Special  prices  in  barrel  lots. 


3 

2.00 


3^         4  in. 
2.50    3.00 


1627  Boasting  Dishes,  Clay,  Denver. 

Diameter 

Price,  per  dozen  $ 

1628  Annealing  Cups,  Clay,  Denver. 

No 

Size 

Per  dozen . . 


3 

.80 


4 
.90 


5 
1.10 


6  in. 

1.75 


0 
$     1.00 


1 

x 
1.00 


in. 


1.00 


JOHN   TAYLOR   &   CO.  'SAN   FRANCISCO,  CALIF. 


61 


CRUCIBLES,  CRUCIBLE  RACKS 
AND  FILLERS. 


1635 


1640 


1641 

No. 
1635     Crucibles,  Hessian,  triangular. 

No.  in  nest 

Height  of  largest 

Width  at  top 

Price,  per  doz. nests. 


1642 


Small  5s    Large  5s      6s  8s 

4567 
4  4*/2          5*/2  7     in. 

3  3^  4%  5^    " 

$   .65        1.40        2.75        4.50 


1636  Small  5s,  outside  piece  only,  per  dozen $       .55 

1637  Small  5s,  round,  per  dozen .55 

1638  Coyers,  Triangular,  Hessian. 

Small  5s  L/arge  5s    6s  8s 

Diameter 3  3^  4^  5^    in. 

Price,  per  dozen $.60         .90         1.25  2.25 

1640  Racks,  Crucible.     Made  of  heavy  sheet  iron,  black  japanned,  for 

holding  10  assay  crucibles  while  mixing  the  assay,  each 
hole  numbered.      Will   hold  Nos.  7  to  10  Battersea  or 
Denver  crucibles. 
Each $    2.50 

1641 Iron.     To  support  4  assay  crucibles  in  an  inverted  position 

after  pouring. 
Each 2.00 

1642  Filler,  Crucible,  of  Russia  sheet  iron,  16^  inches  long,  for  poor- 

ing  ore  or  fluxes  into  the  crucible  while  in  the  furnace. 

Each " .  .75 


62 


JOHN    TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


BLACK    LEAD    CRUCIBLES,    ETC, 


No. 


1 

2 

3 

4, 

5. 

6, 

8. 

10, 

12. 

14. 

16. 

18. 

20. 

25. 

30. 

35. 

40. 

45 

50. 

60. 

70. 

80. 
100. 
125. 
150. 
200. 
300. 


1646 


1647 


1648 


1645 


1645    Crucibles,  Black  Lead  or  Plumbago. 


Nos. 


Height 
Outside. 
Inches. 


Diameter  Diameter 

at  the  at  the 

Top,  Bilge, 

Outside.  Outside. 

Inches.  Inches. 


25/8 
2/8 

3/2 

4 


25/8 
2/8 


534 

634 

75/8 

8 


934 


6% 

7 


85/8 

9 

10  2 


14 


6^ 
7^ 

7/8 

8 

8/8 

9 

934 
10^ 

1134 

12 

12/8 
>3/ 


12>< 

13 


20 
21 


1434 

16 

17 


Dixon's  or  Taylor's  make. 

Capacity 

in 
Liquid 


Measure.               Prices. 

Pints.                  Each. 

/2           $   .30 
1                   .35 

IX               -40 

134               .45 

3  4                60 

4^               .70 

534               .80 
6^               .90 

9'         1 

10  4 

14  2 

No.  14 

18  2 

and 

20# 

24 

L    upwards 

26^ 
29 

5/2c 

31 
35# 

38 

per  No. 

50 

a 
p 

525 


a! 
O. 
rt 
O 

G 

2 

o 


Covers,  Black  Lead. 

No 1         2        3        45        6        8         10 

Per  dozen,  $    2.00  2.25  2.25  2.50  2.50  2.75  3.00    3.25 
Prices  of  all  covers  above  No.  12,  2 J^  cents  per  number. 


12 
3.60 


Dippers,  Black  Lead. 

Size 

Per  dozen .  . . 
Stirrers,  Black  Lead. 

Size 

Per  dozen   . 


Small. 
7.50 

Small. 
8.00 


Medium. 
8.00 

Medium. 
9.00 


Large. 
9.00 

Large. 
10.00 


NOTE. — The  price  of  Black  Lead  Crucibles,  Covers,  etc.,  fluctuates  according  to  the  price  of 
Ceylon  Plumbago,  and  will  be  subject  to  change  without  notice.  All  black  lead  crucibles 
should  be  well  annealed  and  kept  in  a  dry,  warm  place  before  using.* 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


63 


SAMPLING    PANS,   GOLD    DUST    BLOWERS, 
MAGNETS,  TONGS. 


1049 


1651 


1653 


1652 


No. 

1649 


165.0 


1651 


1652 


1653 


1654 


1655 


1656 


Sampling  Pans,  for  ore  samples,  seamless  tin. 

Diameter 5  6  7  8}^  in. 

Perdozen $.50         .60         .75         .90 


Agateware. 

Diameter  . .  . 
Per  dozen  . 


5  678^   in. 

L.25       1.50       1.75     2.00 


Blowers,  Gold  Dust.     Polished  sheet  brass. 

4^x6     6*4x9     9x10     10^x11     11x13  in. 
Each....$   .60       .90       1.00        1  25         1.75 

Magnets,  Horse  Shoe.     Best  English. 

Length 3456          7  8  9          10    in. 

Each..  $   .25     .35     .50     .75     1.00     1.25     2.00     2.25 


with  2  armatures. 
4                   6                  8                  10   in. 
$  .50             .75            1.50            2.00 

12            17           32            36            45    in. 
$  .50         .60        1.00        1.25        1.75 

26             36    in. 
$   .90        1.10 

30            36    in. 
ft  .90        1.10 

Length  .... 
Per  pair  .  .  . 

Tongs,  Crucible,  steel. 
Length  . 

Each  

Length.  . 

Each  

SSf»A1*iflA1*S!       ot(="Al 

Length  .  . 

Each  .  . 

64 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


1660— 166i! 


1659-1661 


1658 


1664^5-6 


1663 

No. 

1657  Tongs,  For  clasping  crucibles  in  the  muffle,  same  style  as  1656. 

Length 19  36  45    in. 

Each $1.00  1.50  2.00 

1658  —    Crucible,  Scorifler  and  Cupel  combined,  steel,  18  inches.  $      .75 

1659  —     Crucible,  iron,  japanned,  scissors  form,  single  bent,  9  inches .  .  60 

1660  Double  bent,  9  inches .75 

1661  —     Steel,  nickel-plated,  single  bent,  9  inches 1 .00 

1662  Double  bent,  9  inches   1 . 25 

1663  Steel,  polished,  double  bent,  solid  platinum  tips,  8  inches, 

Price  varies  with  weight  of  platinum  tips. 
Approximate  price 6 . 00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAUF. 


65 


1667-8-9 


1670 


1677 


1675 


No. 


1664  Pokers,  Iron,  %  inch,  round $  .50 

1665  Scrapers,  Hearth,  flat  iron,  36  inches 


1666  Spoons,  Granulating,    for   sampling   melted   bullion,   4   feet  long, 

bowl  1  inch 

1667  Skimmer,  Crucible,  round  iron,  #  inch,  36  inches  long 

1668 Perforated  bowl,  36-inch 


1669     Shovel,  Coal,  iron,  wooden  handle. 


.35 

1.50 
.76 

1.50 
.25 

NOTE. —  32-inch  Crucible,  29-inch  Scorifier  and  26-inch  Cupel  Tongs  are  the  sizes  commonly 
used  with  our  assay  furnaces. 

1670    Tongs,  Clasp,  for  lifting  black  lead  crucibles.     The  numbers  refer  to  size  of 
crucible  they  are  made  to  fit: 

Nos 8         10        12        14        16        18        20        25 

Each  $2.00    2.50     2.75     2.75     3.00    3.00    3.25    4.25 

Nos 30       35        40        45        50        60        70        80 

Each $4.50   5.00    6.00    6.50    7.00    7.50    8.00    9.00 

Larger  sizes  made  to  order. 


1671 


With  two  side  straps  and  rivet,  with  eye  to  hook  in,  for 
lifting  large  crucibles  by  pulley.     Made  to  order. 


1672     Gloves.      Buckskin,  heavy  gauntlet,  Nos.  9  or  10;  per  pair $  1 .75 


1673 
1674 


Horsehide,  fire  and  waterproof;  per  pair 

Acid,  rubber,  long  gauntlet,  best  quality;  per  pair 


1675  Mittens,  Melters*.     Duck,  padded,  with  gauntlet;  per  pair, 

1676  Finger  Cots,  Acid,  rubber;  per  dozen 

1677  Mittens,  Asbestos,  with  thumb;  per  pair 


1.75 
2.50 
1.25 
.60 
3.50 


66 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


GOGGLES,    MOULDS,    CHISELS, 


1H79 


1682 


1683 


1681 


1681 


No. 

1678  Asbestos  Cloth  for  aprons  for  rackets,  cut  in  lengths  of  1  yard  and 

1  yard  6  inches;  per  yard $  2 . 75 

1679  Goggles,  for  protecting  the  eyes  at   the   fire.       Each    pair   in    tin 

box,  assorted  colored  glasses — green,  blue,  smoke  and 
white. 
Per  pair $     .25 

1681  Moulds,  Bullion  or  Ingot,  round  corners. 

Dimensions,  inside  measure. 

Oz.  silver     15  27  52     107  160  265  428  683      810  1200 

"  gold.     28  50  107     200  300  495  800  1000  1500  2208 

In.  long.     2%  3%6  4>/6     5  5%  1%  8%  ...  11#  12# 

"wide.     1%6  1%  2%5     2%  B)i  3%  4%6  ...      4%  5% 

"deep.    1%6  1%  1%      2  2%  2%  3  . .  .      4%  by& 

Each  ...$.35  .50  .75    1.25  2.25  3.00  3.50  4.50  5.50  7.50 

1682  Bullion  or   Ingot,  with  sliding   bar;    I>^xl^x8   inches 

inside,  with  sliding  bar  to  cast  any  length  desired,  capacity 

150  ounces  gold,  75  ounces  silver $  1 . 00 

1683  —      Quadruple,  for  sample  bars .60 

1684  Chisels,  Bullion. 

Length 5^  7      in. 

Width,  cutting  edge l/z  fi   ' 

Each  $  .25  .35 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


67 


1685 


1689 


1687-8 


1694-5 


1691 


1696 


No. 


1685     Brushes,  Wire,  for  scouring  bullion;  double  end. 


1686 
1687 
1688 
1689 

1690 

1691 
1692 
1693 
1694 
1R95 

Steel  or  brass  

$     .50 
.90 
1.00 
.75 

1.25 

1.00 
1.00 
1.25 
.50 

.40 
.30 

Bristle,  in  leather  tube,  l^/  inches  diameter 

Moulds,  Assay  Pouring.     Deep,  drilled,  smooth,  2 
Shallow,  drilled,  smooth 

holes  

,  2  holes  

oles,  2}i  inches 
id  scorification 

diameter,  1$4  inches  deep;  for  crucible  ai 
assays  

Afisnv    PAiii'inf      ^ino'lf'    moiilH      Ontn  c;fT»r>  V 

Lode  pattern, 
eter,  2ffj  inches 

conical,  2^§  Inches  diam 
deep  .  , 

it  iron,  3  coni- 

cal  holes 

Drilled    smooth    litrht  ca( 

it  iron,  4  coni- 

cal  holes           .... 

with  3  conical  holes  smoo 

th,  casting  not 

drilled                  

"             "           Single     with   handle    to 

be   lifted    with 

tongs,  deep       

"             "           Same,  shallow  . 

1696                     Pouring,   iron,  with   6  conical   holes   and    handle,   bot- 
tom running  down  to  a  fine  point;  for  scorification 


.75 


68 


JOHN  TAYLOR   &  CO.,  SAN    FRANCISCO,  CALIF. 


TRAYS. 


1697 


1698 


1700 


1701 


1702 


No. 
1697    Trays,   Cupel  or  Scorifler.     Heavy  sheet  copper. 

Size         6>£x9  in.,  6  holes. 

Bach $1.50 


9x9  in.,   9  holes. 
2.00 


1698 

1699 
1700 
1701 
1702 


Cast  iron. 

Size 

Each .  . 


8x8  in.,  9  holes.  8x10  in.,  12  holes. 

$1.00  1.25 


30  conical  holes,  without  handles,  12^x14  in $  2.00 

Cast  iron,  8x8  in.,  16  shallow  square  holes 1 .25 

With  detachable  handle 1 . 25 


•      Iron,  japanned,  for  carrying  annealing  cups,  12  holes, 


.75 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


69 


No. 


STEEL   ALPHABETS   AND    FIGURES, 

MALLETS. 


ROMAN 


1715 


Ov^^  c0 


NEVADA. 


1718 


1720 


1715     Figures,  Steel,  for  stamping  bullion,  in  sets,  best  American  make. 

Size #  %6  %  #  ^    in, 

Figures...         $1.00        1.50        1.75        2.50        4.50 


1717     Stamps,  Steel,  in  one  piece. 
Gold  

$1.50 

2.00 

2.75 

3.50 

4.00 

Silver  

2  25 

2.50 

3.00 

4.00 

4.50 

Fine  

1.50 

2.00 

2.75 

3.50 

4.00 

Value  

2.25 

2.50 

3.00 

3.00 

4.50 

Total  ... 

2.25 

2.50 

3.00 

4.00 

4  50 

No  

1.00 

1.00 

1.50 

2.00 

2.50 

Oz  

1.00 

1.00 

1.50 

2.00 

2.50 

$.. 

.75 

.75 

1.25 

1.75 

2.00 

1718  with  name  of  mine  or  assayer  in  one  piece,  made  to  order  of  any 

size  or  style. 

Size #         £        £         X         #         tfin. 

Prices  on  application. 

No'fB. — The  above  stamps  are  made  of  fine  steel,  well-tempered  and  durable, and  can  be  used 
upon  iron  as  well  as  upim  soft  bullion. 


1720    Mallets,  Hickory  Wood. 

Diameter,  face. . . 
Each . . 


2 

$  .25 


.25 


•     3    in. 
.35 


1721 


Iron  Bound,  3-inch  face $  .75 


70 


JOHN   TAYLOR   &   CO..  SAN   FRANCISCO,  CALIF. 


MOULDS,  CUPELS,  BRUSHES, 


1721 


1722 


No. 

1722 


1723 
1724 

1725 

1726 

1727 

1728 
1731 

1732 


1731 


1732-3 

Moulds,  Scorifler,  iron. 

Diameter 

Each .  . 


1724-5 


Scorifler,  brass. 
Each .  . 


2 
$3.00 

$5.00 


234 


Cupel,  iron. 
Diameter  .  .  . 
Each. . 


3     in. 


3.50        4.25        5.00        5.50 
5.50        6.00        6.75        7.50 


...  y?,  1         1/4^       I/'??       1^4         2     in. 

$  .75     1.25     1.50     1.65     1.75     2.25 
Larger  sizes  to  order. 


Brass. 

Diameter 
Each .  . 


%  1         1#       \%       1#         2     in. 

$1.75     2.00     2.25     2.50     2.75     3.00 
Larger  sizes  to  order. 

Cupels,  Made  of  best  Bone  Ash. 

Diameter...  y2  1  1#         \%         1%  2    in. 

Dozen $.15         .25         .25         .35         .40         .50 

Pencils,  Bed  Chalk,  for  marking  cupels,  crucibles,  etc. 

Per  dozen $   .15 


Bed  Chalk,  or  Reddle,  in  sticks,  per  pound 


.25 


Brushes,  Button,  Lingke's  form,  brass  tube,  with  bristles  at  each  end. 

Diameter %  ^  24   in- 
Each  V $   .  40             .50          .    .  60 


With  handle. 

Size 

Each  .  . 


3  Rows 

$   .25 


4  Rows 
.35 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


71 


ANVILS,  HAMMERS. 


1737 


1743 


1744 


1742 


No. 

1735 
1736 


1737 

1740 
1741 
1742 

1743 
1744 


Anvils,  Plattner's.     Steel,  mirror  polished,  2% 

Square,  steel,  mirror  polished. 

Size 2x2 

Each $1 . 30 


Steel,  square,  with  point. 

Weight   

Face 
Each . 


n 


1.75, 


3 

2# 

$1.75 


$   .50 


3x3  in. 
2.50 


Gibs. 

3  in.  square. 
3.50 


Hammers,  Blowpipe,  Plattner's,  with  wood  handle $  .  60 

"  "     wire        "         .75 

Button  or  Slag.     One  end  wedge-shaped,  for  breaking  ores. 

Weight .4  7  12  15  18          22    oz 

Per  Doz $5.50      5.75      6.25       6.50      7.00      7.50 

Weights  do  not  include  handles. 

Geological,  Dana's.  Square  face;  cutting  edge  parallel 

with  handle. 

Face 24  1  1#  *n-  square- 
Weight 10                21                 32    oz. 

Each $1.25  1.50  2.25 

Geological,  Dana's.  Cutting  edge  at  right  angle  with 
handle 

Face Y±                     1                l/^  in.  square. 

Weight 10                   21                 32  oz. 

Each... $1.25               1.50            2.25 


72 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAUF. 


1747 


1748 


No. 


1746  Hammers,  Geological,  for  prospecting.  Combined  hammer,  with 
chisel  edge  and  walking  cane,  with  spike  at  lower 
end  to  assist  in  climbing.  Weight,  2  Ibs.  Capable 
of  giving  heavy  blows,  fine  tempered  steel,  handle 
graduated  for  measuring. 
Each . .  


$  2.50 


1747 


Ball  Pean,  solid  cast  steel. 

Nos 000  00  0  1  \% 

Weight  .            YA.           1  1#  lj£  1&         3     lbs- 

Each $  -90  1.00  1.00  1.15  1.25     2.00 


1748     Pick,  Prospector's,  solid  cast  steel,  adze  edge. 

Nos  ................... 

Face  .................. 

Weight  ................ 

Each.. 


$1.25 


1x1  in. 
2^   Ibs. 
1.50 


JOHN  iTAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


73 


PLIERS, 


1750 


1751 


1752 


1760 


No. 
1750 


1751 
1752 

1753 
1754 

1755 
1760 

1761 
1762 


1753 

Pliers.     Flat  or  round  nose. 

Length 

Each  . 


1754-5 


End  cutting. 

Length 

Each   . 


Side  cutting. 

Length 

Each  . 


3 
.30 

4 
.60 

4 
$  .60 


4 
.35 


5 
.40 


5 

.75 


6 
.50 

6 

.85 

5 
.75 


7 
.60 

7 
1.00 


Flat  tapering  nose;  for   holding  buttons  while  brushing. 
Polished  steel,  5  inches 

Turned   down  nose ;  for  holding  buttons  while  brushing. 
Polished  steel,  5  inches 


With  finer  point;  for  gold  bead 


Shears,  Snip.     Cast  steel,  bright,  polished. 

Length 5  6  7 

Each  $.75          1.00        1.25 


Scissors.    Steel;  6^  inches. 


Blowpipe.     Polished;  for  cutting  thin  metal,  with  two  file 
edges;  cutting  edge,  1^  inches;  each 


8  in. 
.70 

8  in. 
1  12 

6  in. 
.85 

$   .60 

.60 
.60 

8    in. 
1.50 

$  .40 
.40 


74 


JOHN   TAYLOR  &   CO.,  SAN   FRANCISCO,  CALIF. 


VISES. 


1765 


1766 


1767 


No. 


1765     Vise,  Bonney.     Cast  iron,  to  fasten  to  the  bench  with  one  screw. 

No.  2,  jaw  2  inches  wide,  opens  2^  inches,  each $   .75 


c    3)     i.    2  "2 

ment  to  take  a  taper  piece,  each 


with  attach- 


1.00 


1766 


and  An?il  combined,  improved,  with  adjustable  jaw  to  grasp 

taper  form. 
No.  10,  face  of  anvil  4^x2  inches,  jaws  2^  inches  wide,  open 

3  inches,  weight,  8>£  pounds,  each 

No.  20,  face  of  anvil  6)4x3  inches,  jaws  3^  inches  wide,  to 
open  4  inches,  weight,  28  pounds,  each 

No.  30,  face  of  anvil  8x3^  inches,  jaws  4  inches  wide,  open 


5  inches,  weight,  37  pounds,  each.. 


No.  40,  face  of  anvil  8^x4  inches,  jaws  4}^  inches  wide,  open 


6  inches,  weight,  51  pounds,  each. 


1767 


Hand. 

Width  of  jaw 
Each   . 


$  .80 


1.00         1.15 


3.50 
4.50 

5.50 

6.50 

2     in. 
1.25 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


75 


ROLLING   MILLS. 


1770 


1772 


No. 
1770     Boiling  Mills,  Hand.     Improved  single-geared,  with  flat  rolls. 

Nos "2  3  4 

Size 1^x2  2^x3  2^x4  In.  long. 

Weight 80  145  190    Ibs. 

Each $30.00          50.00  75.00 


1772  Hand.     Improved.  Double-geared,  with  flat  rolls. 

Nos -. . . .  3  4 

Size "...  2^x3  2^x4  in.  long. 

Weight 180  225    Ibs. 

Each  $75.00  •    100.00 

These  mills  are  made  from  newly  designed  patterns,  very  heavy,  and  with  improvements  that 
are  very  desirable.  These  improvements  include  the  geared  pressure  screws,  in  connection  with 
our  patent  lifting  device,  which  will  dispense  with  all  springs  and  allow  the  rolls  to  be  raised  and 
lowered  by  turning  the  center  pinion.  The  rolls  also  can  be  quickly  removed  from  the  frame 
without  removing  the  boxes. 


76 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


1773 


No 

1773 


Boiling  Mill,  The  Crown.  The  illustration  shows  a  newly  designed 
mill.  The  rolls  are  2  inches  in  diameter  by  3  inches  long, 
perfectly  hardened,  ground  and  polished.  Cut  pinions  of  steel. 
Geared  pressure  screws,  with  an  improved  lifting  device  without 
springs.  The  rolls  can  be  quickly  removed  from  the  frame. 
Weight,  45  pounds. 

Price..  -   $  30.00 


JOHN   TAYLOR   &  CO.,  SAN   FRANCISCO,  CAUF. 


77 


FLASKS, 


1775 


1779 


1778 


1777 


1781 
Full  Size. 


1780 


No. 

1775    Flasks,  Boiling.     Flat  bottom;  vial  mouth,  best  Bohemian  glass, 

well  annealed. 

Capacity .     %         1        2        4        6        8       12  *     16      24      32  oz. 
Dozen  .  .  .$1,10   1.25   1.50   1.80   2.25   2.60  3.25   3.60  4.00  5.00 
Capacity.  ^^1235    gals. 

Each....  $.60      .75       .85       1.25       2.00      3.50 


1776 


1777 


1778 


1779 


1780 


1781 


Bound  bottom. 

Capacity .     %         1         2         4         6         8        12       16      24      32  oz. 
Dozen  ...$1.10   1.25   1.50   1.80   2.25   2.60  3-25   3.60  4.00  5.00 


Wide  neck. 

Capacity  .1246 
Dozen...    $1.50       1.75       2.25       2.50 

Sidr>  In  IK* 

8            16            32  oz. 
3.00        4.50        7.50 

16  oz. 
6.00 

flat  ground  top. 
3     oz. 
2.25 

2                      4     oz. 
.25                2.75 

$1.25 

Capacity  4                     8 

Dozen  $3.00               4.00 

Capacity  2 

Per  dozen  $2  00 

Parting. 

Capacity  1 

Per  dozen  $2  00                2 

iraning,  ivenneuy. 

Capacity  1  ounce,  dozen  .  .  , 

78 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


1785 


1788 


1782 


1789 


1783 


No. 

1782  Flasks,  Fractional  Distillation,  with  side  tube. 

Capacity 4  8  16    oz. 

Per  dozen $3.00  4.50  6.00 

1783  Copper  determination.     Pear  shaped,  wide  mouth  and  broad  flange. 

Capacity   4  6  8  J  6  oz. 

Dozen $1.60          1.80  2.00  3.00 

1784  — •     Bohemian,  hard  glass,  for  Kjeldahl's  nitrogen  determination. 

Capacity 200  500% 

Each $   .40  .60 

1785  —         Erlenmeyer. 

Capacity   1         2         4         6         8         16         32  oz. 

Per  dozen $1.251.502.002.503.004.00       5.00 

1788  For  gas  evolutions,  heavy  glass,  bulb  shape,  well  formed  lip,  wide 

neck,  flat  bottom. 

Capacity 8  16  32  64  oz. 

Each $   .30  .40  .60  .90 

1789      Wide  mouth. 

Capacity 8  16  32  64  oz. 

Each $  .25  .30  .45  .70 

1790       Fitted  with  rubber  stopper;  glass  funnel  and  delivery  tube  for  gen- 

erating gases. 

Capacity 4  8  16  32  oz. 

Each $  .  50  .65  .90  1 . 15 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


79 


1792 


1794 


No. 

1791  Beakers,  Bohemian  Glass,  Usual'  form,  lipped  or  plain,  made  of  best  hard 
Bohemian  glass,  equally  thin  at  bottom  and  sides,  thoroughly  an- 
nealed. 

Nos 123456789      10     11     12 

Capacity,       3     4^     7      11     16     22     36     46     64     90    120  150  oz. 
Each $   .10  .15   .20   .25   .30   .35   .40  .45   .55  .65   .75   .90 


1792 


In  nests. 

Nest   Nos.  1  to    3,  in  nests  of  3,  capacity  3  to   7  oz. 


X 


4, 
5, 
6, 
7, 
8, 
9, 
10, 


4, 
5, 
6. 
7, 
8, 
9, 
10, 


11 
16 

22 
36 
46 
64 
90 


Per  Nest 

.$  .45 

.  .70 

.  1.00 

.  1.35 

.  1  75 

.  2.25 

.  2.75 

.  3.50 


1793 


Griffin's.     Low,  wide  form,  lipped. 

Nos 

Capacity 

Each 

Nos 

Capacity   

Each . . 


00 

0 

1 

2 

3 

4 

l/^ 

2>£ 

5 

8 

12 

20  oz. 

$  .09 

.11 

.12 

.18 

.25 

.30 

5 

6 

7 

8 

9 

10 

.25 

.40 

.55 

.70 

.80 

120  oz. 

$  .40 

.50 

.60 

.70 

.80 

.90 

1794' 


Griffin's,  in  nests. 

Nest  Nos.  00  to  1,  in  nests  of  3,  capacity  1^  to 


0  '•  2, 

0  "  3, 

1  "  4, 
1  "  5, 
1  "  6, 
1  "  8, 
1  "  10, 


3, 

4, 
4, 
5, 
6, 
8, 
10, 


5  02 

8  ' 

Per  Nest 

i  $  .30 
40 

12  ' 

65 

20  ' 

85 

25  ' 

1  25 

40  ' 

1  75 

70  ' 

2  50 

120  ' 

.   3.50 

1795 


Copper  lipped,  thin,  Griffin's  form. 

Capacity 125  250  500  1000% 

Each $.75  .90  1.00  1.35 


80 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


ASBESTOS  BOARDS,  SAND    BATHS, 
GLASS  PLATES. 


1799 


1802 


1803 


No. 

1796  Wire  Gauze,  steel.     To  use  under  flasks,  beakers,  etc. 

Size 4  5  6  8  in.  sq. 

Each $.10        .10          .15  .20 

1797  Brass. 

Size 456  Sin.  sq. 

Each $  .10        .15          .20          .25 

1798  Asbestos  Boards.     In  sheets  42x44  in. 

Thickness %,  >/l6  3/3a  # 

Each $.50        1.00          1.50        2.00 

1798         Pads.     To  support  hot  beakers,  boiling  flasks,  etc.     }/6  in.  thick. 

Size 4  6  12  in.  sq. 

Each $   .05  .10  .20 

1799  Sand  Baths,  shallow,  Russia  sheet  iron. 

Diam....       3  4          5          6          8          10          12        14  in. 

Each....$  .12       .15       .20        .25      .35        .50        .60       .70 

1801  Glass  Plates.     I/ight  ground  on  one  side  for  beaker  covers.      Air  pumps, 

receivers,  etc. 

Size 3  4  5  6  in.  square. 

Each $   .10         .10         .15         .15 

1802  French,  heavy,  ground  on  one  side. 

Size 3       4       5       6       8       10      12  in.  square. 

Each $  .20  .25   .30   .35   .50   .80  1.20 

1803  Ground  upon  one  side  and  at  the  edges,  with  fi-in  hole 

through  the  center,  to  cover  chemical  vessels  and  insert 

stirring  rod. 

Size %y2      4     5^  6#      7     8#    10^     12^  in.  sq. 

Each $  .20  .25  .30  .40    .50  .60    .70     1.25 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


81 


BEAKER   COVERS,    BOTTLES,  TUBES. 


1810 


1805 


1807 


No. 

1805  Glasses,    Watch,    or    Beaker   Covers,    best  imported  well   annealed   glass, 

ground  edges. 

Diameter 1        1#     1#       2       2^  3     in. 

Perdozen $.20     .25     .25     .30     .75  1.25 

Diameter 3}^       4       4j^      5        5}^  6     in. 

Perdozen $1.501.752.002.503.00  3.00 

1806  Beaker  COTer,  concave,  with  hole  at  side  to  insert  stirring  rod. 

Diameter 3  3l/2  4  4^    in. 

Dozen $2.50        3.00        3.50        4.00 

1807  Watch  Glass  Clamps,  for  holding  in  pairs  two  glasses  either  2  or 

2^  inches $   .25 

1810  Bottles,   Wash,  Fresenius.     Fitted  with  rubber  stoppers. 

Capacity 8  16  32  oz. 

Each $   .50         .65  .90 

1811  Same  as  No.  1810  ;  of  heavier  glass. 

Capacity 8  16  32  oz. 

Each $   .75  1.00  1.25 

1812  With  versatile  movement. 

Capacity 8  16  32  oz. 

Each $   .75  1.00  1.25 

1813  Tubes,  Wash  Bottle.     Separate  from  the  bottles. 

Size 8  16  32  oz. 

Per  set $   .25  .30  .35 


82  JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


TEST    TUBES,    BRUSHES. 


1816 


1817 


u 

1818 


1823 


No. 


1816     Test  Tubes.     Best  imported  glass  ;  "well  annealed  ;  free  from  lead.     Bach 

tube  wrapped  separately  in  paper. 


1817 


n. 


Doz  .  .  $ 

.20 

.25 

.30 

.30 

.35 

.35 

Gross  1 

.75 

2.50 

2.75 

3.00 

3.50 

3.75 

Size..  6* 

•ys 

6x34 

7x34 

7x1 

8x1 

10x1  in. 

Doz  .  .  $ 

.35 

.35 

.50 

.60 

.60 

1.25 

Gross  3 

.75 

4.00 

5.00 

5.00 

6.50 

12.00 

On   fnnf 

Size 

5 

6 

7 

8  in. 

Doz 

$  .75 

1.00 

1.25 

1.50 

1818 


With  side  tube. 

Size 6  7 

Doz $   .85          1.00 


1.30 


9  in. 
1.75 


1820    Ignition  Tubes.     Hard  glass. 

Size 456 

Doz....  $   .60     .65       .75 


789          10  in. 
.85       1.00     1.50      2.50 


1823     Brushes.     Test  tube,  sponge  end,  doz $  1.20 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


83 


RACKS, 


1865 


1830 


1831 


No. 


1825    Backs.     Test  tube,  for  4  test  tubes  and  draining  pins,  each $  ,25 


1826 


.50 


1827 


13 


.65 


1828 


"13         "        with  2  shelves, 


.76 


1830 


12         "         and  draining  pins,  also  to  support 
Ca,  Cl,  tubes  U  form,  each 


.75 


1831 


Erlenmeyer's,  for  18  tubes,  with  draining  pins, 
shelves  to  hold  four  funnels,  drawer  for  pipettes, 
glass  stir  rods,  etc. 

Each..  2.00 


84 


JOHN    TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


DISHES. 


1835 


1838 


1841 


1843 


No. 

1835 


Dishes,  Evaporating,  Royal  Meissen,  porcelain,  glazed  inside  and  upper 
half  outside,  with  lip. 


1838 


1841 


Nos  

11 

10 

9 

8 

7 

6 

5 

Diam  

2^ 

3^ 

±% 

5 

bl/z 

€ 

i^ 

Sin. 

Capacity  

1 

2 

4 

6  ozs.    y2 

1 

l^pts. 

Each  

$  .15 

.20 

.30 

.40 

.50 

75 

1.00 

Nos  

4 

3 

2 

1 

0 

00 

000 

Diam  

9 

10 

11 

12 

13/2 

15 

18  in. 

Capacity  

2 

3  pts. 

72 

1 

1>6 

1 

% 

2  gals. 

Each  

$1.40 

1.75 

2.00 

2.65 

3.65 

5 

.50 

6.50 

Evaporating, 

German  porcelain,  with  lip,  glazed  inside. 

Nos  

000 

00 

0 

1 

2 

3 

Diam  

3 

3^j         4 

t/4 

5^ 

654 

7^  in. 

Capacity  

2 

3 

4 

6 

8 

16  oz. 

Each  

i 

$  -20 

.25 

30 

.40 

.50 

.65 

Nos  

4 

5 

6 

7 

8 

9 

Diam  

9^ 

10}^       1 

1^ 

12 

12^ 

3 

L3}£  in. 

Capacity  

32 

48          64 

80 

96 

128  oz. 

Each  

I 

1  -75 

1.00       1 

.25      1 

.50 

1.75 

2.00 

Nos  

10 

11 

12 

Diam  

14^ 

15^ 

17  in. 

Capacity  

1/4 

2 

3  gals. 

Each  

$2.50 

3.25 

4.50 

Deep  form. 

Nos  

9 

8 

7        6 

5 

4 

3 

2 

1 

Diam  

25/8 

3 

Btf      35/8 

4^ 

4^     J 

~yj4 

55/8 

6  in. 

Capacity  .  .  . 

1 

lj^2 

2        3 

4^4 

5 

8 

10 

15  oz. 

Each  

$  .12 

.15 

.20     .25 

.30 

.35 

.40 

.45     .50 

1842 
1843 


Same,    in  sets  of  6,    Nos.  4  to  9,  per  set $  1.35 

9,        "     1  to  9,        "      2.70 

With  lip,  flat  form. 

Nos 7  6  5  4  3          2  1 

Capacity...               1  2  4  4^  5y2  7^  .8^  oz. 

Each..                  $  .20  .25  .30  .35  .40  .45  .50 


JOHN   TAYLOR   &   CO  ,  SAN   FRANCISCO,  CALIF. 


85 


CASSEROLES,   CAPSULES, 


1845 


1846 


1850 


1852 


1851 


1855 


No. 

1845 


1846 


1850 


Dishes,  Glass,  with  lip,  round  bottom. 
Diatn  ......     V/z         3       3 


Each 


$  .15     .15      .25 


4 
.30 


.35 


5 
.40 


6 
.60 


7 
.80 


1A  m- 
1.00 


Dishes,  crystalizing,  glass.     Fine  Bohemian,   flat  bottom,   straight 
sides. 


Diam 
Each 


4 

$  .35 


5 
.45 


6 
.70 


7 
.90 


8  in. 
1.00 


Evaporating,  agate  ware. 
Capacity  .  .      #         }{        ^ 
Each  .....   $  .50      .75     1.00 


12345 
1.65    3.00  4.00    5.75  8.50 


6  gal. 
11.00 


1851  Casseroles,  Royal  Berlin  porcelain.     With  porcelain  handle. 

Nos 1  2  3  3a  4  5 

Dia 233^  4  4}^         5}£ 

Capacity      135  8  13          24 

Each.... $.35      .40         .50          .70         .85        140 

1852  With  cover  and  wooden  handle. 

Capacity #0        ^ 

Diam 3        3% 

Each $  .50     .65 

1855    Capsules,  Royal  Meissen  porcelain,  with  covers. 

Nos 1          234567 

Diatn 3^       2%     2^     2%     1%     ls/8     ls/8 

Capacity..      6         4)1     3^      2        1%     1%      1 
Each $.60     .50     .40      .35     .30      .25     .20 


K 

4 

.75 


1.66 


6 
1.50 


6 
6  in. 

44  oz. 
1.75 

1  liter. 

6^    in. 

1.75 

9 
1  in. 


.15       .15 


86 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


CRUCIBLES,  TRAYS. 


1857 


1858 


1859 


1862 


No. 

1856  Capsules,  Royal  Berlin  porcelain,  with  covers. 

Nos 000  00            0  1  2  3 

Diam 1  1#  \%  1%  2  2*4  in. 

Capacity  ...  %  -£  &  1  1%  3l/£  oz. 

Each $.15  .20  .25  .30  .40  .50 

1857  Crucibles,   Rose   or   Reduction.     Unglazed   porcelain,    perforated   covers 

with  tube. 

Capacity yz  1  2  oz. 

Each $  .75         1.00        1.50 

1858  Light  Spun  Iron,  with  cover. 

Capacity %  1  2  4  oz. 

Height \  Itf  2  2^  in. 

Diam \%  2^  2^  3^  in. 

Each $  .25  .30  .40  .50 

1859  — —         Normal  School,  Skidmore's.    For  making  oxygen  from  Mn.  O8. 

Calcination  of  chalk  with  recovery  of  the  expelled  CO.,.  Man- 
ufacture of  soda  from  Cryolite,  preparation  of  Ammonia,  des- 
tructive distillation  of  coal,  wood  or  other  organic  substances. 

Capacity 1  YZ  oz. 

Each $  1.00 

1860  Same,  single  tube , $  .  75 

1861  Trays,  Acid  of  Lead,  square,  for  etching  on  glass  with  hydrofluoric  acid. 

Diam 3  4  5  in. 

Each $  .40  .50  .60 

1862      Rectangular. 

Size 1x2x4  1x4x4  1x5x6  in. 

Each $  .50  .60  .75 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


87 


LAMPS. 


1865 


1868 


1781 


1870 


1872 


No. 
1865     Lamps,  Rose's.     For  alcohol  or  coal-oil,  with  sliding  rod,  chimney, 

triangle,  and  two  brass  rings  on  mahogany  base;  Mueller's 

modification. 

Price $  7.50 


1868 


1870 


1871 


1872 


Liihmes',  Brass.     For  general  laboratory  work. 
Price $  7 . 50 

Russian.  Self-acting,  for  high  heating.  Steam  or  alcohol  vapor 
from  upper  boiler  blows  through  flame  of  lamp,  making  a  strong, 
horizontal  blast. 

Nos 1  2  3 

Height 5#  5^  6^  inch. 

Each $2.00  2.50  3.00 

Heavy  Copper,  vertical  blast,  self-acting,  for  alcohol. 

Height 3  4  in. 

Each $1.75  3.50 

White's,  Copper.    Downward  blast  through  separate  flame, 
adjustable. 
Each $  5 . 50 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


1875 


WICK    HOLDER    TURJEO 
HALF  A  REVOLUTION 


1877 


1680-82 


No. 

1875 


Lamps,  Daugler's  Gasoline  Laboratory.  The  most  intense  heat 
can  be  obtained  by  this  burner,  which  can  be  easily  and 
instantly  regulated  at  will.  The  sliding  grate  allows  the 
article  to  be  placed  as  near  the  flame  as  desired.  Pres- 
sure regulated  by  rubber  bulb. 
Each  . 


1876 
1877 


1878 

1880 
1881 

1882 


Extra  rubber  bulbs,  each 


Blowpipe,  Plattner's  form,  mounted  on  support,  can  be 

taken  apart  to  carry  in  pocket.     Screw  cap  to  prevent 

leakage  of  oil,  with  swivel  to  incline  for  downward  flame. 

Price  without  support,  D  and  E,  nickel-plated 

Supports  D  and  E  for  platinum  crucible,  porcelain  evaporat- 
ing dish,  etc. 
Price .  . 


Blowpipe,  Fletcher's,  improved,  polished  brass 

"  "  "  nickel-plated  . 

Tin,  for  tallow 


5.00 
.35 


4.00 

1.25 
.75 

1  00 
.30 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


89 


1885 


1887-8 


1890 


1892 


1895 


No. 
1885     Lamps,  Spirit,  brass,  with  pull-off  cap. 

Capacity 2                      4  8  oz. 

Each $  .30                 .50  .60 

1887  Brass,  with  winch  to  raise  and  lower  wick. 

Capacity 4  7  oz. 

Each $  .50  .75 

1 888  Nickel-plated. 

Capacity 4  7  oz. 

Each $   .  60  .85 

1890          —       Spirit,  glass,  globe  shape,  ground  caps  fitted  with  tube  and  wick. 

Capacity 2                      4  8  oz. 

Each $  .30                 .35  .50 

1892  Spherical,  mounted,  nickel-plated,  metal  cup,  universal  movement 

for  downward  flame  when  using  a  blowpipe. 

Capacity  , 2  8  oz. 

Each $1 . 00  1 . 50 

1895  Simplicity,  with  9  facets  on  the  fount;  may  be  readily  adjusted  to 

any  required  position.     Useful  for  assayers  and  chemists. 

Capacity 2                      4  4  oz. 

Burner,  diam.  of  wick.                       3/l6                     y±  y*  in. 

Each $   .60                 .75  .85 


90 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


LAMPS,  WATER    BATHS, 


1896 


1897 


1900 


1902 


No. 

1896  Lamps,  Parting.     By  W.   H.  Leavens;  for  alcohol;  galvanized  iron,  very 

strong;  shelves  for  sand  bath  and  annealing  cups;  upper  shelf  per- 
forated for  holding  test  tubes. 

Burners 6  8  12  in. 

Bach $3.00  3.M)  4.50 

1897  Parting.     Same  as  preceding,  except  upper  shelf  is  left  out  so  as  to 

use  flasks  instead  of  test  tubes.     Hood  and  pipe  attached  for  car- 
rying off  fumes. 

Burners 6  12  in. 

Each $3.50  4.00  5.00 

1900     Water   Baths-     Heavy  polished  copper,    tin  lined,  with  concentric    rings, 
cover  and  steam  escape. 

Diam 4  5  6  10  in. 

No.  of  rings  .  3456 

Each $.90      1.15      1.60      2.50       5.00 


1902 


With  constant  water  level. 

Diam 5 

Each $2 . 00 


6 

2.25 


Sin. 
3.00 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


91 


DRYING    BATHS. 


1905 


1908 


1910 

No. 

1905     Water    Baths   with   test  tube  rack   as  used  by  Dr.  Blair  in  iron 
analysis,  made  of  polished  copper. 

7  inches  in  diameter $  4 . 50 


1908  Heavy  copper,  arranged  to  be  heated  by  steam;  stove  or 

burners  with  eight  openings,  all  provided  with  concentric 
rings  and  cover,  pipe  and  stop-cock;  also  has  Kekule's 
constant  regulator. 

Size,  26x14  in $20  00 

1910  Drying  Baths  or  Ovens.  Double  walls  with  inlet  for  water,  made  of  pol- 
ished copper,  with  openings  for  thermometer  and  gas  regulator, 
movable  shelf,  extra  sheet  iron  bottom  to  prevent  burning  out, 
and  four  detachable  iron  legs- 

Outside  dimensions 6x8  8x10  10x12  in. 

Each $6.50  9.00  12.00 

1915 Same,  of  tin,  with  double  walls,  with  inlet  for  water,  two  openings 

tor  thermometer,  etc. 
Size,  6x8  in.,  each $  3.00 


92 


JOHN  TAYLOR   &   CO.,  SAN 'FRANCISCO,  CALIF. 


BLOWPIPES,    * 


1920 


1924 


1928 


192B 


No. 


1920     Blowpipes,  Jewelers'  Form.     Brass,  with  moisture  bulb $  .30 


1921 
1922 

1923 
1924 
1926 
1927 


without  moisture  bulb 


nickel-plated,  with  moisture 
bulb 

nickel-plated,   without  mois- 
ture bulb  . 


.20 

.40 
.30 


John   Taylor   &  Co's,   with  wooden   mouth-piece  and 

threaded  tip  to  screw  on 50 

Plattner's,   brass  trumpet   mouth-piece,    moisture  bulb 

and  movable  platinum  tip  ;  takes  apart  for  cleaning. .     2.00 


Same,  nickel-plated 2.25 

1928  Tips,  Blowpipe,  made  of  platinum.     Apertures  %0,  %0,  %0  millimeters, 

1929     Hard  rubber  mouth-pieces,  trumpet  shape,  each 

NOTE. — Our  platinum  tips  are  swaged  from  one  piece  of  metal  and  are  not  soldered  ;  are 
durable.  We  true  the  holes  in  line  with  the  axis,  and  polish  the  end,  so  a  correct  stream  of  air 
and  best  results  are  obtained.  We  make  them  with  different  size  aperture,  as  laid  down  by 
Plattner :  %0  millimeter  wide  for  qualitative  assays,  and  %„  millimeter  for  such  qualitative  assays 
as  require  a  strong  flame,  and  for  all  quantitative  assays  ;  also  %0  millimeter  for  Harding's 
Furnace  279. 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CAUF. 


93 


1935 


1936 


1938 


1939 


1945 


No. 

1935  Blowpipes,  Fletcher's   Hot   Blast,    No.    30  specially  designed  for 

jewelers,  dentists,  chemists,  etc.     Has  nearly  double 
the  power  of  the  old  blowpipe. 
Taper  shaft,  brass $  .65 

1936  No.  30  b,  straight  shaft,  with  hard  rubber  mouth-piece. .        .75 

1938  No.  30  c;  jointed  with  both  hot  and  cold  blast  jets,  folded 

in  case 1.00 

1939  No.  31.     Hot  blast  chemical.     A  pattern  of  the  ordinary 

chemical  blowpipe,  with  the  patent  hot  blast  arrange- 
ment, with  hard  rubber  mouth-piece 1-25 

1940  Hard  rubber  mouth-piece,  separately 25 

1945  No.  42,  with  both  cold  blast  and  patent  hot  blast,  two 

jets,  nickel-plated  mouth-piece. 

In  case 1 . 50 

• 

1946  Boss*.     Mouth-piece   C,  separately,  for  use   with  other 

blowpipes 60 


94 


JOHN   TAYLOR    &   CO.,  SAN    FRANCISCO,  CALIF. 


1950— No.  32A 


1960 


1954 


No. 

1950  Blowpipes,  Fletcher's  Special  Chemical,  No.  32a,  with  folding 

stand,  adjustable  at  any  height  or  angle.  It  can  be 
used  either  with  the  mouth,  or  the  small  hand-blower 
can  be  attached  and  the  blowing  done  by  the  fingers. 
With  this  blow-pipe  is  supplied  one  jet  with  and  one 
without  the  patent  coil,  to  enable  a  larger  variety  of 
flame  to  be  obtained.  The  lamp  or  a  weight  should 
be  placed  on  the  stand  when  in  use. 

Complete,  as  illustrated $  4 . 75 

No.  32,  blowpipe  only 1 .00 

1951  Hand  blower  only,  as   illustrated,  catalogue  No.  1950, 

No.  32a,  in  case,  wilh  extra  rubber  dish 3 . 25 

1952  Oxyhydric.     Mounted  on  stand;  universal  movement, 

to  direct  flame  in  any  direction.     Plain 5 . 50 

1953  With  stop-cock 6  50 

1954  With  stop-cock  and  lime-holder 8 . 00 

1955  Prepared  Limes,  for  oxyhydric  blowpipes. 

Per  dozen,  in  tin  box 2 . 50 

1960    Blowpipes,' Brazing,  with  2  stop-cocks,  one  for  gas,  the  other  for 
air  blast. 

y±  inch  tube 2. 50 

"      " 4.50 


JOHN   TAYLOR  &  CO.,  SAN   FRANCISCO,  CALIF. 


GAS  BURNERS. 


1969 


1968 


1970 


No. 

1965    Burners,  Bunsen's.     With  air  regulators. 

Tubes 1  2 

Each $  .50         1.25 


3 

1.75 


4 
2.00 


6 
3.00 


1968 
1969 

1970 


With  tripod,  to  support  dish $  1 .00 

C haddock's.  Of  porcelain,  incorrodible;  for  use  in  hoods 
where  metal,  on  account  of  the  smoky  flame,  soon  cor- 
rodes. Complete,  with  support  for  dishes,  chimney  and  3 
asbestos  pads 1 . 75 

Adjustable  Bunsen,  No.  5  GL  For  burning  gas  of  vari- 
able quality,  In  this  burner  the  size  of  the  orifice  through 
which  the  gas  escapes,  is  adjusted  by  turning  the  milled 
cap-nut  seen  inside  the  arm  which  supports  the  upright 
tube.  The  air  supply  is  adjusted  by  screwing  the  arm  up 
or  down,  it  being  threaded  and  moving  upon  the  stem 
which  passes  through  its  lower  end.  It  follows  that  any 
desired  quality  of  flame  can  be  produced  with  it,  and  that 
it  will  burn  any  kind  or  quality  of  gas,  rich  or  poor.  Its 
adjustability  renders  it  a  favorite  burner  for  those  using 
gasoline  gas,  or  the  mixture  of  gasoline  vapor  and  air 
made  by  gas  machines.  This  burner  is  furnished,  when 
required,  with  an  adjustable  support  for  holding  small 
flasks  or  evaporating  dishes.  It  is  well  made  and  strong, 
and  is  mounted  upon  a  cast  iron  base.  Total  height,  6^ 
inches. 
Each $  1 .00 


96 


JOHN    TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


1981 


1982 


1983 


1980 


1984 


No. 


1975  1985  1972 

1971  Burners,  No.  5  H.     On  brass  base,  turned  and  polished $  2.00 

1972         No.  5K.     Adjustable  Bunsen;  iron  base,  with  support. .          1.75 


1973 
1975 


— •      Support  only 


Bunsen's.  New  self-adjusting  burner  for  burning  gases 
of  various  qualities.  The  special  features  of  this  burner 
are  as  follows  : 

By  turning  the  knurled  part  A  the  flame  can  be  increased 
or  lowered,  the  flow  of  gas  and  air  being  regulated  auto- 
matically, the  burner  will  therefore  always  retain  a  blue 
flame.  B  is  the  set  screw  by  which  to  regulate  the  burner 
tip  C,  supplying  more  or  less  air  according  to  quality  of 
gas.  The  supply  of  gas  is  regulated  by  inserting  the 
screw  into  the  next  slot,  either  to  the  right  or  left.  Care 
must  be  taken  that  the  screw  is  not  inserted  into  the  slot 
too  tightly,  as  this  will  interfere  with  the  turning  of  the 
burner.  If  a  yellow  flame  should  be  desired,  separate  the 
set  screw  B  from  the  burner  tip  C,  allowing  the  gas  and 
air  to  be  regulated  separately 


1980     Burner  Attachment.     To  set  into  the  Bunsen  burner 


1981 
1982 
1983 
1984 
1985 


To  set  over  the  burner  ;  with  rest  for  the  blowpipe 

Crowns.     Giving  a  round  flame  for  beating  small  dishes . . 

Tripods.     For  supporting  dishes 

Wing  Top.     For  bending  tubing,  etc 

Bunsen's   Blast.     With    two    stop-cocks,  movable  in   all 

directions. 
Each .  .  


.75 


1.25 
.25 
.25 
.50 
.25 
.25 

4.50 


JOHN    TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


97 


BLOWPIPE  FURNACES. 


1991 


1990 


1999 


No. 
1990 

1991 

1992 
1993 

1994 
1995 
1996 
1997 
1999 

2000 


Pletcher-Plattner  Blowpipe  Furnace,  for  capsules  or  crucibles 
^inch  diameter.  This  furnace  is  made  of  Fletcher's  patent 
non-conducting  fire-clay,  and  is  almost  indestructible.  Two 
forms  of  furnace  support  are  made,  to  be  used  in  connection 
with  the  No.  5  Blast  Bunsen.  The  Fletcher  support  is  made 
of  one  casting,  with  a  thin  metal  plate  for  the  furnace  to  rest 
upon.  The  Lewis  support  is  placed  on  a  substantial  tripod,  and 
so  arranged  that  the  furnace  is  self-centering.  The  top  plate  on 
which  the  furnace  rests  can  be  turned  aside  without  detaching 
it  from  the  burner,  when  it  is  desired  to  use  the  burner  for  other 
purposes.  The  cap  of  the  burner  is  also  secured  to  the  frame 
by  a  wire  hinge,  which  prevents  its  being  lost  or  misplaced. 

When  used  in  connection  with  the  Blast  Bunsen,  the  furnace 
has  a  hole  in  the  bottom  ;  it  is  also  supplied  with  a  side  hole  for 
use  with  a  mouth  blowpipe.  With  the  Blast  Bunsen  No.  5,  as 
shown  in  the  cut,  and  a  Fletcher  foot  blower,  100  grains  of  cast 
iron  can  be  perfectly  fused  in  two  minutes  ;  the  temperature  be- 
ing, at  the  same  time,  under  the  most  perfect  control.  In  order- 
ing, specify  "bottom"  or  "side"  hole. 

Blowpipe  Furnace,  No.  5c,  blowpipe  furnace,  with  Blast  Bunsen 

and  Fletcher  Furnace  Support $  4. 25 

No.  5e,  blowpipe  furnace,  with  Blast  Bunsen 

and  Lewis  Furnace  Support 4 . 75 

No.  5,  Blast  Bunsen,  alone 3 .50 

No.  5d,  blowpipe  furnace,  alone,  with  bottom 
or  side  hole,  and  one  crucible 25 

Fletcher  Furnace  Support,  alone .60 

Lewis  Furnace  Support,  alone,  including  cap .  1 . 00 

Clay  Crucibles,  per  dozen .25 

Clay  Capsules,        "            .25 

No.   7,  low  temperature   burner,    with   blast 

pipe  C 2 .00 

No.  7,  low  temperature  furnace,  without  blast 

pipe  C 1 . 75 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


BURNERS,    COAL-OIL   STOVES,  WICKS. 


2001-2 


2003 


2004 


No. 


2001     Burners,  Fletcher's  Radial,  No.  1,  ring,  3%  in.  diam $  1.5,0 


11    2,       "        5  in.     " 


2.00 


2003 


"    3R,    " 


1.00 


2004     Coal-oil  Stoves,  with  1  flat  wick,  4  in. 

Model,  iron  cistern 

Defiance,    "        "       

Florence,    "        "       

Fairy,  glass         "       


.75 
1.00 
1.25 
1.50 


2005     Flat  Wicks,  for  coal-oil  stoves. 

Width 

Per  dozen . . 


3 

.40 


4  in. 
.50 


JOHN"   TAYLOR   &    CO.,  SAN   FRANCISCO,  CAUF. 


99 


BLOWERS,  FUNNELS, 


2015 


2006 


2007 


No. 

2006    Blowers,  Fletcher's  Foot  Bellows.     Giving  a  Continuous  blast  of  air. 
Nos 9,  small         9A,  med.       9 B,  large 


Diameter., 
Each  . 


$4.00 


9 
5.00 


11    in. 
7.00 


2007 


Foot  Bellows,  mounted  on  legs. 

Nos 10,  small 

Diameter 7K 

Each $5.00 


10A,  med.      10B,  large 
9  11    in. 

6.00  8.00 


NOTE. — The  Nos.  9  and  10  Bellows  have  a  single  disc;   the   Nos.  9A  and  10A  double,  and 
the  Nos.  9B  and  10  B  treble  discs. 

2008    Blowers,  Extra  Rubber  Discs  for  Nos.  9  or  10,        each $     .50 

"      "      9Aor  10A    " 75 

"       "      9B  or  10B     "   .  1.00 


2009 


Extra  Nets  for  above. 


.35 


2015    Funnels,  Best  German  Glass.     Angle,  60°;  long  stems,  ground  to  a  point. 

Diameter 2  2}^  3  3^  4           4^  in. 

Each $  .10         .12         .15         .15         .20         .20 

Diameter 5  5T/2  7  9         10^  12  in. 

Each $  .25         .30         .40         .60         .85       1.15 


2016 


Bnnsen's,  with  edges  ground  even;  angle,  60°;  long  stems,  ground 
to  a  point. 

Diameter. \%         2       1%  3         3%         4         4^  in. 

Each $.10       .15       .18       .20       .25       .30       .35 


100 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


2020 


2022 


2024 


2025 


2030 


2032 


No. 


2020    Funnels,  Ribbed. 


2022 
2024 

2025 
2030 
2032 

Diameter  3^         5          6          7        8)4  in. 

$     -20 

32  oz. 
.60 

)ck. 
9  in. 
3.00 

64  oz. 
3.25 

8  oz. 
1.50 

Capacity  4           8          16         32         64  ozs. 

Each  $     15       .20       .25       .35        50 

In  sets  of  3,  assorted,  per  set    ......  ...... 

,  ..                       II  O  I'll       IMllklkAI* 

Capacity  4                  8                16 

Each  $  .25             .35               .50 

Diam  4              5            6              7 

Each  $1  .  25        1  .  50       2  00         2  50 

—  —       Separatory,  globe  shape,  heavy  glass,  stoppered. 
Capacity   8                 16                 32 
Each  $1.50           2.25             2.75 

—  —       Separatory,  globe  shape,  light  glass,  stoppered. 
Capacity  1                   2                   4 

Each.,                              $   .90            1.00             1.25 

JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


101 


FUNNELS,  THISTLE  TUBES, 


2035 


2036 


2040 


2041 


2042 


2043 


2044 


No. 

2035    Funnels,  Separatory,  cylinder  shape,  open  top. 

Capacity 1  2 

Kach $   .  80  1 . 00 


2050 


4 
1.25 


8oz. 
1.75 


2036 
2040 


Tin,  Plantamour's,  for  hot  filtrations,  5#  in.  on  top  side.  .     $  1 .75 

10 


Tubes,  conical  top. 

Length 

Each .  . 


12  in. 
.20 


2041  Tubes,  spiral  stem,  conical  top,  length  12  in,  each $     .40 

2042  "      conical  top,  safety  bend .25 

2043  "      thistle  top,  plain 20 


2044  With 

Each. 


1 

$   .20 


2 
.25 


4  bulbs. 
.40 


2050    Filtering  Rings,  porcelain;  2  or  3  arms $     .35 


102 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CAUF. 


FILTER    PAPER. 


2059 


2055) 


No. 

2055    Filter  Paper,  Prat- Dumas  &  Co.  (French),  round  cut,  white. 

Nos 7      10      13       15       19      25      33      40       45       50 

Diam....       34         5         6         8       10      13       15       18       20  in. 
PerlOO..$.10     .18     .20     .25     .30    .40     .60     .70     .90     1.10 
In  sheets,  size  21x17  in ream,  $4.75;  quire,  $   .35 

2056 Prat-Dumas  &  Co.  (French),  round  cut,  gray. 

Nos 15          19    -     25          33          40          45          50 

Diam....             6            8            10          13          15          18  20  in. 

Per  100..       $.25      .30         .35        .50        .60         .80  .90 

In  sheets,  size  21x17  in; ream,  $4.00;  quire,  $   .30 

2057 Baker  &  Adamson's,  washed  in  hydrochloric  and  hydrofluoric 

acid,  giving  the  lowest  ash  of  any  filter  paper  on  the  market. 
Put  up  in  boxes  holding  100  round  filters. 

Diam 5%          7  9  11          12^          15  ctm. 

Ashes,  1  filter:  .00001  .00002     00003   .00005   .000065   .00009  grm. 

Per  100 $.40       .50         .65         .80        1.00         1.20 

2058  Baker  &  Adamson's,  washed  in  hydrochloric  acid  only. 

Diam 7  9  11  12 #  ctm. 

Ashes,  1  filter:  .00002         .00003         .00005         .000065  grm. 

Per  100 $   .25  .35  .45  .50 

Munktell's  Swedish.  Is  of  the  best  quality  manufactured,  and 
has  been  recommended  by  the  most  prominent  chemists  through- 
out the  world.  The  several  grades  are  adapted  to  the  various  kinds 
of  laboratory  work. 

2059       No.  0.     Washed  filters,  washed  with  hydrochloric  acid,  removing 

traces  of  iron,  alumina,  lime,  etc.    The  ash  is  reduced  to  a  minimum, 
and  a  high  standard  of  purity  is  secured.     A  uniform  and  quick 
filter,  retaining  fine  precipitates,  adapted  to  the  most  precise  re- 
quirements of  analytical  work.     Cut  round  ;  100  sheets  in  package, 
5  packages  in  a  box. 

Diam 5#  7  9  11         12^         15 

Ashes,  1  filter:   .00011    .00015   .00029   .00044   .00056   .00081 
Per  100 $.20       .27         .41         .55         .63         .85 


ctm. 
.00124  grm. 
1.25 


JOHN   TAYLOR    &   CO.,    SAN    FRANCISCO,  CALIF.  103 


2065 

No. 

2060  Filter  Paper,  Swedish,  No.  IF.     Uniform  in  thickness;  best  linen  material; 

most  perfect  filtering  paper  made;  leaves  the  smallest  amount 
of  ash  of  any  unwashed  paper.  Very  strong,  adapted  to  the 
highest  grade  of  chemical  work.  The  finest  precipitates  are 
retained.  Cut  round  ;  100  sheets  in  a  package,  5  packages 
in  a  box. 

Diam 5}^  7  9  11         12^          J5         18^  ctm. 

Ashes,  1  filter:    .00025   .00040   .00066   .00098   .00127   .00183   .00278  grm. 

Per  100 $.11       .16         .25         .30         .40         .50         .72 

In  sheets  48x48  ctm ream,  $19.00;  quire,     $  1.10 

2061  Swedish,  No.  2.     A  pure  white  linen  paper,  heavier  than  No. 

IF,  and  not  as  closely  woven,  therefore  more  rapid  in  filtra- 
tion. A  superior  paper  for  all  kinds  of  laboratory  work.  Cut 
round  ;  100  sheets  in  a  package,  5  packages  in  a  box. 

Diam 5^  7  9  11  12^  15  IS1/?  ctm. 

Per  100 $.10         .13       .20        .26  .31  .40  .53 

In  sheets  48x48  ctm ream,  $16 . 00  ;  quire,  $   .  95 

2062  Swedish,  No.  3-     A  pure  white  paper,  heavier  than  No.  2; 

filters  rapidly;  fully  equal  to  the  high  grade  German 
papers,  but  at  less  cost  than  other  paper  of  same  quality  and 
weight;  cut  round;  100  sheets  in  a  package,  5  packages  in 
a  box. 

Diameter.    5^           7           9  11      12^        15     18^  ctm. 

Per  100..$   .08       .10       .15       .19       .24       .32       .41 
In  sheets  48x48  ctm ream,  $13.00;  quire,  $    .75 

2065  Schleicher  &  Schull's.     Pure,  No.  595. 

Diameter.  5}^      7      9      1112^1518^    24      32     38^  ctm. 

Per  100..$  .12  .15  .20  .23  .25  .30  .40  .60  1.00  1.25 

In  sheets  47x54  ctm ream,  $10.00;  quire,  $  .60 

2066  Same.     No.    597   is  much    heavier  than  No.  595;   for  rapid 

and  clear  filtration. 

Diameter .'.     5y£       7         9         11     12^      15     18^  ctm. 

Per  package  of  100  sheets. $   .15     .20     .25      .30     .35     .40     .55 

In  sheets  58x58  ctm ream,  $18.00;  quire,  $  1.00 


104 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


2071 


2072 


2070 


2074 


2075 


No 

2067  Filter  Paper.    Schleicher  &  Schull's  No.  589. 

Diameter 5}^             7              9  11          12^  15ctm. 

Ashes,  1  filter,  0,00004  0,00007  0,00011  0,00017  0,00021  0,00025 

Per  100 $  .60         .70          .90  1.10        1.35         1.60 

2068 Same.     No.  590. 

Ashes,  1  filter,  0,00004  0,00005  0,00008  0,00013  0,00016  0,00019 
Per  100 $.75         .80         1.25         1.45       1.65         2.00 

Nos.  589  and  500,  S.  &  S.  filter  papers,  are  washed  in  hydrochloric  acid  and  hydrofluoric 
acid,  for  quantitative  analysis  and  for  rapid  filtering,  and  leave  only  the  slightest  trace  of  ashes 

2069  Extraction  Thimbles,  Fat  Free,  Schleicher  &  SchulPs,  for  Soxhlet, 

Mohr  &  Knofler's  extraction  apparatus  for  milk  and  other  fat  determi- 
nations, in  boxes  of  25  thimbles  in  each  box. 

Sizes 33x80  19x90  33x94         43x123  mm. 

Per  box  of  25 $2.25  2.00  3.00  4.00 

2070  Bottles,  for  weighing  filters.     Very  light  glass ;  wide   mouths  ; 

ground,  hollow  stoppers. 

Height 40  50  60  70  80mm. 

Diameter 25  30  30  35  40    " 

Each $.30  .40  .50  .60  .70 

2071  Precipitating  Jars,  with  lip. 

Capacity y^  %  1  2  4  pt. 

Each.... $   .20  .25  .35  .50         .75 

2072  Precipitating  Glasses,  on  foot. 

Capacity %  1  2  3  4  6  oz. 

Each $.15        .20         .25         .30         .35         .40 

2073  Spoons,  deflagrating  or  combustion. 

Bowl,  1  in.,  each.. $  .25 

Bottles,  Woulf,  of  heavy  German  glass. 

2074 2  necks 4          8          16  32  oz.  j£          1  2  gal. 

Each $.40     .50        .60  .85  1.10  2.00  3.50 

2075        3  Necks..            .50     .60        .75  1.00  1.25  2.25  4.00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


105 


BOTTLES,  BELL  GLASSES, 


2085 


2081 


2080 


2086 


2082 


No. 


2076    Bent  Tubes,  for  Woulf  bottles. 


16  32ioz. 

Price,  per  set  ____  $.30  .40 


.50 


1 
.60 


2  gal. 
.80 


2080  Bottles,  Wash,  wide  neck,  with  varnished  wood  stoppers,  packed  with  rub- 

ber ;  holes  for  the  tubes  lined  with  rubber ;    straight  glass  tubes  to 
be  connected  by  rubber  tube. 

Capacity 1                   2                   4  8  pints. 

Bach.l $1.00            1.50            2.00  2.50 

NOTE — These  can  be  made  in  any  style,  with  any  number  or  size  of  tubes. 

2081  Bottles,  Aspirator,  with  outlet  near  bottom. 

Capacity %                         1  2  pints. 

Each $  .50                    .75  .90 

Capacity %                  1                 2  3  gals. 

Each $1.10          2.00          2.75  4.00 

2082  Same  as  No.  2081,  with  glass  stopper  and  ground  glass  stop-cock. 

Capacity 1             2  pints.                 ^  1    gal. 

Each $275        3.50                     4.00  5.00 

2085  Bell  Glasses,  low  form,  with  knob,  strong  rim  at  the  bottom,  ground  for 

,  use  with  the  air  pump. 

Height 4        ,                 5  7  in. 

Diameter 6                        8  10  in. 

Each $1.00                1.30  1.75 

2086  Tall  form,  .with  knob. 

Height 6            8           10           Ifc  15      in. 

Diameter 3            4            5             6  7^  in. 

Capacity #          %           #            1  2    gal. 

Each $.50      .65         .85        1.25  2.00 


106 


JOHN  TAYLOR  &   CO.,  SAN   FRANCISCO,  CALIF. 


BELL   GLASSES,   GLASS    TUBING, 
GAUGE  GLASSES. 


2037 


2088 


2089 


No. 

2087  Bell  Glasses,  Open  top,  wide  opening. 

Height 6  8  10  12  15      in. 

Diameter 3  4  5  6  7^£  in. 

Capacity *A  l/i  ^2  1  2    gal. 

Each $.50  .75  1.25  1.50  2.50 

2088  Swelled  form,  with  knob. 

Base  diameter 4^  6  7^  9  in. 

Capacity %  Y*  1  2  gal. 

Each $  .  75  1 . 00  1 . 50  2 . 75 

2089  Tubulated,  with  opening  on  top  and  tuberlature  on  side  near 

bottom,  for  use  with  filtering  pump. 

Height Sin. 

Diameter 6    " 

Each $3 . 00 

2100  Glass  Tubing,     Illustration  page  108.    Best  German,  lead  free,  made 

expressly  for  chemical  use,  for  glass  blowing  and 
fitting  up  chemical  apparatus,  being  strong  and 
elastic.  In  lengths  of  5  feet. 

Size .>£  to  34  inch.         ^  to  2  inches  outside  diameter. 

Per  pound  $   .  60  .75 

2101  Bohemian    Hard    Glass   for    combustion,   assorted 

diameters,  per  pound $  1 .00 

2102  Capillary,  assorted  sizes,  per  pound 

2103  Barometer  Tubes,  sealed  at  one  end,  ^  inch  to  ^ 

inch  bore,  30  inches  long,  each -50 

2104  Stirring  Bods,  Glass.     Solid  and  hollow,  fused  ends,  for  beakers,  evaporat- 

ing dishes,  etc. 

Length 7       8       9      10     11     12      15       18    in. 

Diameter Kf  '%%'    %* •'••%*&      ^        /^    in. 

Solid,  per  doz.  .   $  .45   .50   .60   .65   .70   .75  1.00  2.00 

Hollow,  per  doz.. $  .50   .55 

2105  Tubes,  Scotch  Glass  Gauge  for  boilers,  stills,  etc.,  per  dozen. 

Length 10        11         12         13         14         16         18      24  in. 

Diam.,  Jitoji..     $3.00    3.25     3.60     385     4.25     4.85     5.50     725 
"       &to&  3  50    4.00    4.50     5.00     5.25     6.00     6.75     9.00 


JOHN  TAYLOR   &  CO.,  SAN   FRANCISCO,  CALIF. 


107 


GLASS  CUTTERS,  RUBBER  TUBING, 

REDUCERS. 


2120 


2109 


2108 


2107 


No 


2106     Washers,  Gauge   Glass.      For  packing  the   ends    of   gauge    tubes 
water  tight. 
Per  dozen  ............................................... 


2107     Glass  Cutter,  for  tubing;  will  cut  any  length  up  to  10  inches 


$   -25 
1.50 


2108 
2109 
2110 

2111 
2115 


Tubing,  Rubber.     Vulcanized,  best  quality,  white. 

Internal  diam. .  .       }i 
Light,  per  foot..$  .04 

Heavy,      "        ..      .05 
Extra  heavy 

Black  Rubber,  pure  gum. 


.05     .06     .08     .09     .12 
.06     .08     .10     .12     .15     .18 
.25     .35     .40 


.20 
.50 


Internal  diameter  ....  }i 

Per  foot  ............         $  .  08 


n. 


.10 


.12 


Red  CoTered.     Sold  only  in  lengths  of  12^  feet. 
Internal  diameter.  ...  J{6  %  Ke 

Thickness  of  wall.    .  .  %4  %2  %2 

Price $  .08         .10         .12 


.18 


/3a 

.15 


.22 


m. 


.18 


2120     Reducers,  glass.     To  connect  rubber  tubing  of  different  sizes. 

}i  to  %  inch $  .  10         ^  to  ^  inch $   .15 

X   "  H     "     10         3/8  "  ^     «•     15 

#  "  %     "     10         #  "  fc     "     20 

#  "  5/8     "      10         %  "    1     "  ' 20 

3/8  "  y2   "  .10 


108  JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


109 


GLASS  TUBES,  FILES,  CORKS. 


2122 


2123 


2134 


No. 

2122    Tubes,  Three-way,  T  form. 

Diam 

Each  . 


$   .  20 


.25 


in. 
30 


2123 


Y  form. 
Diam . .  . 
Each  . , 


$  -25 


.30 


g 

.35 


in. 
.40 


2125  Files,  taper  saw  or  three-cornered:  flat,  and  round. 

Length 3            4            5            6  8  in. 

Each $.15       .20         .25         .30  .35 

2126  File  Handles,  per  dozen $  .50 


2130     Corks,    taper  shape,  of  best  selected  wood,  regular  length. 

Numbers 1          2        3        4         5         6          7  8  9        10 

Diam   small  end . .         #        /' 6       H     7/*6        /*        At        H  */'<>  %     % in- 

Pergross $.60     .60     .70     .80     1.00    1.10     1.40  1.70  2.00    2.60 


17 


Numbers 11            12            13            14            15  16 

Diam.  small  end. .         '^6           %  *%6        'Ke           1  1^8  -,»  — 

Pergross $2.70       2.95  3.30        3.65  4.00  5.20  5.80 

19                20  22  24  26 


Numbers 


18 


Diam.  small  end. .  l^'e  IX 

Pergross $6.40          7.00 


8.00 


10.00 


1#         1%  in- 
12.50        15.00 


2132     Flat,  for  wide-mouth  flasks,  bottles,  etc." 

Dia.  Ig.  end  1       1^    \%    1^    \%   lf£    1^     2    f2^    2^    2^    3  in. 
Gross  ...  $  .45     .75  1.00  1.25  1.50  1.75  2.00  2.50  3.00  3.50  4.50    5.50 


2134    Press,  Cork,  Rotary,  for  small  and  large  corks,  each $  1 .25 


110 


JOHN  TAYLOR   &  CO.,  SAN    FRANCISCO,  CALIF. 


RUBBER    STOPPERS,    CORK    BORERS, 
GLASS   STOP-COCKS. 


2135 


2137 


2140 


2126 


=8= 

2145 


2141 


No. 

2135     Stoppers,  Rubber,  best  and  softest  pure  rubber.     Solid,  one  or  two  holes, 
tapering,  for  various  chemical  apparatus. 

Our  rubber  stoppers  are  made  in  our  own  moulds.  We  do  not, 
as  formerly,  give  the  diameter  of  the  large  end  of  these  stoppers, 
the  sizes  being  so  graded  that  the  size  of  the  small  end  of  each 
stopper  is  the  same  as  the  diameter  midway  between  the  top  and 
bottom  of  the  next  smallest  number. 


Nos  

..       00 

•    0 

1 

2 

3 

Diameter  at  bottom  

M 

% 

9/ 

Il/f 

J^6in. 

Dozen  

..$   .50 

.60 

.75 

.85 

.90 

Nos  

4 

5 

6            7 

8 

9 

Diameter  at  bottom  

iS/ 

l*/6 

1%6        1  l/i 

13/Q 

19/6jn. 

Dozen  

..     $1.00 

1.25 

1.75       2.35 

2.75 

3.75 

Nos  

10 

11 

12         13 

14 

15 

Diameter  at  bottom  

ls^ 

\y± 

1%       2/8 

2  %6 

2}4  in. 

Dozen  

..     $5.00 

6.00 

7.00     9.00 

10.50 

12.00 

2136    Cork  Borers,  in  sets. 

Set  of  .  .  .  . 

3 

6            8 

12 

15 

Sizes  

/^-/^ 

i^_^  YZ~Y^ 

/^-^ 

y%-y% 

Per  set  ... 

$  .75 

1  .  25      1  .  75 

2.00 

2.75 

O1  Q7                                                  Stlfifitoiiu 

*1  nn 

2140     Stop- COCks,  Geissler's,  glass.      Hollow  stopper;  ground  air  tight;  larger 
size  for  chlorine  generators,  tanks,  etc. 


2141 


2145 


Each  . 

$1  .  75 

f 

3.50 

5.00 

Two  deliveries. 

Bore   .                

^ 

^  in. 

Each  ...              .          ... 

$3.25 

4.50 

6.00 

Bore  y&  in  

Length  

3 

11  in. 

Each  . 

*   .75 

1.00 

JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF.  Ill 


2151 


2154 


2155 


2156 


2158 


2159 


2159 


No. 

2151     Stop-COCks,  Brass,  double  ends,  for  tubing  connection. 

Bore ft 

Each $   .  65 

*  *r 


1.00 


2153 


Unpolished $  .25 


2154 


Brass,  one  end  for  tubing,  the  other  with  male  screw. 
Bore ft  /^in- 
Each  $  .75                               1.00 


2155 


Brass,  one  end  for  tubing,  the  other  with  female  screw. 

Bore ft  /^  in. 

Each $  -75  1.00 


2156 


Brass,  with  double  male  screws. 

Bore ft 

Each $  .75 


1.00 


2157 


Brass,  with  double  female  screws. 

Bore ft 

Each $   .75 


1.00 


2158 


Brass,  with  male  and  female  screws. 

Bore ft 

Each $   .  75 


1.00 


2159 


Nipples,  with  either  male  or  female  end $  .25 


112 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


FAUCETS,   SYPHONS,   ACID    PUMPS. 


2162 


2160 


2163 


2164 


No. 
2160 


2161 

2162 

2163 
2164 
2165 


2165 


Faucets,  hard  rubber,  both  ends  for  rubber  tubing  connections. 

Bore X«  %* 

Each $  .30  .40 


fo  inch  bore,  with  screw  and  nut,  for  tanks  or  jars. 
Each  . 


in. 


Syphons,  glass,  plain 

Length,  short  arm. .  .  . 
Each  . 


With  exhaust  tube. 
Length,  short  arm . .  . 
Each  . 


15 
$  .25 


17 
.30 


16 
$  .40 


With  exhaust  tube  and  glass  stop-cock. 
Length,  short  arm. ...  15 

Each $1.25 


Acid  Pump,  glass ;  for  emptying  carboys.    Glass,  no  rubber  to 
be  injured  ;  the  flow   under  perfect  control  ;  can   fill 
large  or  small  bottles  with  equal  ease  ;  durable  and 
cheap. 
Each  . 


1.25 


$  1.00 


19  in. 
.40 


19  in. 
.50 


19  in. 
1.50 


2167 


With  foot  blower 


$  3.75 
7.75 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CAUF. 


113 


SUPPORTS, 


2168 


JL. 


o-o 


No. 

2168 


Supports,  carboy,  carrying  and  tilting  device.  To  overcome  the 
difficult  and  dangerous  operation  of  carrying  and  tilting 
heavy  carboys,  we  herewith  introduce  a  simple  device, 
whereby  the  carrying  of  carboys  becomes  easy  and  the 
pouring  out  of  its  contents  can  be  done  with  safety.  The 
illustration  shows  a  stand  with  a  carboy  placed  thereon, 
partly  swung  over,  as  in  the  act  of  pouring.  It  will  be 
seen  that  while  the  carboy  can  be  tilted  or  turned  over 
with  ease,  and  any  quantity  drawn  from  it  without  the 
danger  of  spilling,  a  considerable  amount  of  labor  and 
material  can  be  saved. 


114. 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


BOTTLES. 


2170 


2171 


2173 


2172 


2175 


2174 


As  seen  on  the  illustration,  the  carrying  bars  are  fas- 
tened or  clamped  to  the  carboy  by  means  of  two  screw- 
bolts,  which  rest  on  the  cleats  of  the  box.  These  bars 
are  of  such  lengths  as  to  project  beyond  the  ends  of  the 
box,  and  provide  handles  whereby  the  carboy  may  be 
carried.  The  stand  can  be  folded  up  in  a  compact  man- 
ner for  transportation  or  storage. 


Price  .            

$  5.00 

No. 
2170 

Bottles*  coin  or  acid  test.    2  oz   .          

.50 

9171 

Cobftlt.     With  ground  glass  cap,  low  form.     ^A  oz 

35 

0170 

\Vith  ground  cap  tall  form                     J^             1             2 

4  oz. 

Each..                                                .   &   .35         .45         .55 

65 

2173 
2174 


Schuster's.     With  stopper.     2  oz $  .25 


With  stopper  to  turn  half  around  to  admit  air.     White  or 
amber  colored  glass. 

Size 1 

Each..  20 


2  oz. 
.25 


2175 


Mixing.     Graduated  and  glass  ! 

Capacity 250 

Each $  1.50 


500 
2.00 


1000 
3.00 


2000% 
4.50 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


115 


GRADUATES. 


2180 


2190 


2195 


No. 

2180 


2181 


2185 


2186 


2190 


Graduates,  glass,  cone  shape. 

1          2        3        4        6        8        16        32  oz. 


2191 

2192 
2195 


Each  

$   .25     . 

30    . 

35     .40 

.50 

.60 

1.00     1.50 

Capacity 

j 

1 

2  drachms 

1 

60 

120  minims 

Each  

ft  .25 

.30 

Glass,  double 

graduation, 

v      •  

in  grammes  and  ounces. 

Capacity  .  .  .  j 

1 
40 

2 

75 

4 
150 

8 
300 

16 
500 

32  oz. 
1000  grms. 

Each  .  . 

ft  .40 

.50 

.70 

1.10 

1.45 

2.50 

Cone  form. 

Capacity 25     50  100    200  300     500     1000  grms. 

Each $.35.45  .60     .75  1.001.252.00 

Cylinder,  with   lip,  double   graduations  in   cubic  centimeters, 
reading  either  up  or  down. 

Capacity 5  10                   25                     50  % 

Each..'. $  .30  .35                 .50                  .65 


Capacity 
Each . . 


100 
$  .85 


200 
1.00 


250 
1.25 


500 
1.50 


1000  % 
2.50 


Cylinder. 

Capacity 500     1000     2000     3000     4000     5000  grains. 

Each $.50     .75       .90      1.00     1.15     1.25 


Cylinder,  glass-stoppered. 

Each $1.25 


1.75 


Cylinder,  glass-stoppered,  with  1  row  of  figures. 

Capacity 25  50 

Each $   .65  .75 


Capacity. 
Each.. 


250 
$1.65 


500 
2.25 


100  % 
1.00 

1000  % 
3.50 


116 


JOHN  TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


TEST  TUBES,  BURETTES. 


-3* 


2210 


2212 


2215 


No. 
2200     Test  Tubes,  graduated,  on  foot. 

Capacity 

Each. . 


$  .25 


.40 


15-^ 
45. 


.50 


2205     Tubes,  Nessler's,  for  ammonia  test.     Made  of  clear  glass,   with  polished 
bottoms. 

50       100 


VJ1  dU  UdLlULl  <J\J               J.X-'V/              *J\J    «L1V1    J.W         >J\J,    J-W    0.1JVA    J-<J\J   /c 

Each.  $  .50     .60            .75                       1.00 
2210     Burettes,  Mohr's.     Accurately   graduated   for  pinch-cocks;    with  tip  and 

rubber  connections. 

Capacity  

10 

25 

50 

50  % 

Graduation  , 

Xo 

Xo 

ys 

Xo 

Each  

$  -75 

.90 

1.15 

1.30 

Capacity  

100 

100 

200 

200% 

Graduation  .... 

I/ 
/s 

Xo 

/s 

}{ 

Each  

$1.75 

2.00 

2.50 

2.00 

001  o                                 WitVi  OpiM1pr'<? 

glass  stop-cock. 

Ziu\.£>                                              VVlLll   V_TCl33lCJL   o 

Capacity  

25              50 

50 

100 

100% 

Graduation 

Ko                      /S 

Xo 

/s 

Xo 

Each  

.$1.50        1.75        2.00 

2.40 

2.75 

2215 


Gawalowsky's,   with   glass  stop-cock  and  glass  side  tube  with 
stop-cock,  for  filling  from  reservoir. 

Capacity 25  50  100% 

Graduation #„  %0  l/IO 

Each $3.00  3.50  4.25 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAUF. 


117 


2216 


2217 


2216-7 


2220 


2230 


2231 


No. 

2216  Burettes,  Schellbach's,  with  dark  enameled  stripe  on  white  enameled  back- 

ground, giving  a  definite  meniscus;  with  Geissler's  stop-cock. 

Capacity 25  50  100% 

Graduation */lo  */lo  }/o 

Each $1.50  1.75  2.50 

2217  With  Fresenius'  stop-cock.     Prices  same  as  No.  2216. 

2220  Squibb's,  complete,  with  reservoir.     The  most  convenient  form 

of  self-filling  automatic  burette;  filled  by  pressure;  the  over- 
flow syphons  back  into  the  reservoir,  thus  avoiding  the  trouble 
of  reading  the  zero  point. 

Capacity 25  50% 

Graduation */lo  */lo 

Each $4.50  5.00 

2225  Mohr's,  Graduated  in  grains,  with  Geissler's  stop-cock. 

Capacity 100  500  1000  grains. 

Graduation 1  1  1  « 

Each ..  $1.75  2.25  2.50 

2230  Float  or  Swimmer,  each $  .30 

with  points  to  prevent  sticking 
to  side,  each $  .50 


118 


JOHN   TAYLOR   &   CO..  SAN   FRANCISCO,  CALIF. 


BURETTES,   CLAMPS. 


2235 


No. 


2238 


2247 


2246 


2245 


2248-50 


2235     Burettes,   Gay  Lussac's,  mounted  on  polished  wood  base. 

Capacity....  25  25  50  50  75          100% 


Each 

Capacity. . .  . 
Graduadon. . 
Each  . 


&1.X15      1^25      1.50      1.76       1^75      2.00 
100  120 


i/ 

/I0 


250% 


2.50 


150  200 

2^75         3A00         3.50 


2238 


Bink's,  English  form. 

Capacity....             10           25  50           50  100         100% 

Crl  clduitlOll                           r                      *  *                    r  ^/*> 

Each.                    CLUO  1.&  1.5S0  1.75  2.25       2.50 


2245     Clamps ;  wood,  for  test  tubes.     With  rubber  band. 
Each . . 


2246 
2247 


Wood.     With  springs  for  holding  large  tubes  or  flasks. 
Each   

Stoddard's,  for   test  tubes.      Of  brass  spring  wire ;  very 

commendable. 
Each .  . 


$   .15 
.30 

.15 


2248 


Chaddock's,  for  test   tubes.       Of  japanned  spring   wire, 

rubber  covered  jaws. 
Each..  .35 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


119 


2251 


2252 


2253 


2254 


2^55 


2256 


No. 

2249 


Clamps,    Chaddock's,   for    beakers.      Of  japanned    spring    wire, 

rubber  covered  jaws. 
Each $   .25 


2251 
2252 
2253 
2254 

2255 
2256 


Chaddock's,  for  evaporating  dishes.     Of  japanned  spring 

wire. 
Each . .  


.25 


Mohr's,  s.  c.  pinchcocks,  Nickel-plated  ;  strong  spring. 

Size Small.  Medium.  Large. 

Each $  .15  .20  .25 


Hofmann's.     Nickel-plated. 

Size 

Each .  . 


Small. 
$  .25 


Hofmann's,  improved. 

Width  ............          #  1  1# 

Each  .............     $  .25        .30          .40 


.60 


Large. 
.30 


2iiu 

.75 


Hofmann's  latest  design.     Nickel-plated  ;  for  rubber  tubing  up 

to  1  in. 
Width  ..............................  H  1  in* 

Each  ...............................  $.30  .35 

Bnnsen's,  for  rubber  tubing.     Of  brass  ;  1^  in.  wide. 

Each  .............................................       $  .50 

Bnnsen's,  for  heavy  rubber  tubing.      Can  be  screwed 

on  table  ;  to  hold  tubing  up  to  2  in. 
Each..  ..............  75 


120 


JOHN    TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


2258 


2261 


2259 


2262 


2260 


No. 

2258    Clamps,  for  burettes,  etc.,  with  set  screws,  iron,  to  attach  to  a 
retort  stand , . 


$     .50 


2259        for  burettes,  with  strong  spring  closing  the  movable  jaw.  .75 


2260 


Hofman's,  improved,  for  two  burettes  or  tubes. 


1.00 


2261 


Bnnsen's,  for  holding  burettes,  etc.,  with  fastener,  com- 
plete          1 .00 


2262 


Bunsen's,  for  large  tubes  and  condensers,  with  fastener, 
complete 1 . 25 


JOHN   TAYLOR   &    CO.,  SAN   FRANCISCO,  CALIF. 


121 


CLAMPS,    PIPETTES, 


2263 


2264 


2265 


2266 


2270 


No. 


2275 


2263     Clamps,  BlinSftn's,  for  very  large   apparatus,  the  jaws   adapting 

themselves  to  irregular  shapes,  with  fastener,  complete,     $  1.60 


2264 


Iron,  for  fastening  apparatus  to  table. 

Size 2^  3  4  5  6  Sin. 

Each $.30       .40       .50        .60        .80          1.30 


2265 


Clamp  Holders,  for  fastening  clamps  to  supports. 

Size Small. 

Each $   .20 


Large. 
.25 


2266 


Universal,  to  set  at  any  angle $  .40 


2270     Pipettes,  Tolumetric.     Accurately  graduated. 

Capacity 1           2           3  4  5           10           15% 

Each $  .10     .10        12  .15  .15        .20          .25 

Capacity 20      25  50  100      150  X 

Each $.30    .35  .40  .60       .75 


2275 


Graduated.     Thistle  top,  with  sheet  rubber  top. 

Capacity 10 

Graduation ^ 

Each $   .60 


20% 

% 
.75 


122 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CAIJF. 


J 


PIPETTES,  BOTTLES. 


2277 


2280-4 


I 


No. 

2276 


2277 
2278 
2280 

2281 

2282 
2284 

2285 
2286 

2287 
2288 


2276  2278  2288  2285  2286-7 

Pipettes,  Mohr's.     Most  accurately  graduated  in  centimetres  and  fractions. 

Capacity 1         5      10     10     20     25      50       50      100% 

Graduation...     ^oo       }L     £     Xo     £     #„      &        %        % 
Bach $  .60  .60   .65  .70   .80  .90  1  25  1.00  2.00 

Dropping  Tubes.     Bent  form,  1^-inch  bulb,  each $   .15 

With  rubber  bulb,  dozen .50 

Bottles,  Specific  gravity,  with  glass  stoppers. 


Capacity. 
Each. 


100 

$  .60 


250 

.75 

500 
.90 

1000  grains. 
1  00 

ght. 

250 
2.00 

500 
2.50 

1000  grains. 
3.00 

20 
.70 

25 

.80 

50 
.90 

100  grammes. 
1.00 

ght. 
20 
L.75 

25 
2.00 

50 
2.50 

100  grammes. 
3.00 

In  box,  with  counterpoise  weight. 

Capacity 100 

Each $1.75 

Capacity 10 

Each $   .60 

In  box,  with  counterpoise  weight. 

Capacity 10 

Each $1.50 

With   thermometer   ground  into   neck,    Fahr.  scale,  in  box,    with 
counterpoise  weight. 

Capacity 50                          100  grammes. 

Each $2.50                   3.00 

Gfeissler's  form,  Fahr.  thermometer,  porcelain  scale,  capillary  over- 
flow tube,  in  box  with  counterpoise  weight. 

Capacity 25  50 

Each $4.00  4.50 

Same,  with  Celsius  thermometer. 

Capacity 25  50 

Each -$4.00  4.50 

Bulb  shape,  with  capillary  stopper,  hollowed  out  at  lower  inner  end. 

Capacity 10  25  50  100  grammes. 

Each $1.00       1.25       1.50       2.00 


100  grammes. 
5.00 

100  grammes. 
5.00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


123 


FLASKS,  PYROMETERS. 


2290 


2291 


2292 


2293 


2295 


No. 

2290 


2291 
2292 
2293 
2295 

2296 
2300 


2300 

Flasks,  volumetric  or  liter,  with  glass  stoppers. 

Capacity 50     100  150  200     250     500     1000 

Bach $.30     .40  .50  .55     .60     .75     1.00 

Without  glass  stoppers. 

Capacity 50     100  150  200     250     500     1000 

Each $.25     .30  .35  .40     .45     .60      .75 


Sugar,  with  two  graduations  on  neck. 

Capacity %  «%0 

Each $  .35  .40 


i  So/ 
/i6o 

.60 


For  polarization,  Kohlrausch's,  one  graduation  on  neck. 

Capacity 50 

Each $  .  40 

4 

Dish,    wrought   German   silver,    with   spout,    polished,    for   sugar 

analysis,  3  inches  in  diameter,  with  counterpoise  weight. 
Each . " 


Aluminum 


2000  % 
1.25 


2000  % 
1.00 


200/          C/ 
/220    /O 

.75 


100% 
.50 


$  3.50 
2.50 


Pyrometers,    for   noting   high    temperatures,    melting    points   of 

metals,   in   crucibles  and   furnacps,   heat  of  ovens, 

etc.;    5^    in.  dial,  reading    to   1200°  Fahr.       The 

stem  30  in.  long. 

Price,  either  horizontal  or  perpendicular 


$25.00 


124 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


THERMOMETERS. 


10 

co 


. 


V    O 


CUO 


.i.    O 


In 

J 

cd 


•§» 

.fl  CM 


S    = 
*o 

®     <£ 


OW    o 


<D 
O 

O 

CO 

co 


X 

u 

-3      . 

53         rt 

5    -to 
o  o^~o 


O 

o 
o 


3.2 


08 

o    • 


ca 
3 

-a  x! 

rt   o 

>-     C8 

OW 


O  -n    r] 
O    «    o 

"c5w 


C<» 


O  iO 

c  t- 


00 


8- 


ed 

^ 

o* 


2 

-C 


T3 
fl 


0 


bO 


'O 
rt 


cd 

!• 

OJO 


O 

•o 


O 

O 


CM 

T-I 
CO 


CO 

i~H 

co 


CO 
(M 


CO 
(M 


<U  O 

*" 


p*  ^ 

co    a 

C/2     E 

ft  .2 

^^ 


c .; 

C3 

a., 


o 
o 


o 


—  4J  . 

-5  o  '42 

eS   =  - 

o  -<H  rs 


O 
CM 
CO 
(M 


Full  size. 
2314 


Full  size, 
2320 


JOHN  TAYLOR  &  CO.,  SAN   FRANCISCO,  CALIF. 


125 


1 


20 


00 


0 


2325 


2327 


2329 


No. 


2325    Thermometers,  Self-registering,  Fahr.  scale,  upon 
polished  wood,  maximum,  minus  40 
to  plus  120. 
Each..  $  1.50 


2326 


2327 


2328 


2329 


Full  size. 
2328 


Minimum,  minus  40  to  plus  120. 

Each 1-50 

Maximum  and  minimum,  mounted  on 
neat  hard-wood  frame,  with  magnet. 
Each 3 . 50 

Incubator,  paper  scale,  inside  of  glass 
tube,  accurately  graduated,  with  red 
line  to  show  marking    103°. 
Cut  full  size. 

Each 1  •  75 

Japanned  tinned  oases. 

Length 7  8  10         12  in. 

Perdozen $1.50       1.75       2.50       3.00 


126 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAIJF. 


HYGROMETERS. 


2330  2331  2332 

Scales.  Centigrade  symbol  "C";  Fahrenheit  symbol  "  F ";  Reaumur, 
symbol  "  R  ".  The  zero  of  the  scales  of  Reaumur  and  Centigrade  is  freezing  point 
of  water  marked,  in  each  case,  o°,  while  the  intervening  space  up  to  the  boiling  point 
of  water  is  divided,  in  the  former  case  into  80  parts,  and  in  the  latter  into  100.  In 
the  Fahrenheit  scale  the  freezing  point  is  represented  by  32°  and  the  boiling  point  by 
212°,  the  intervening  space  being  divided  into  180°,  which  admits  of  extension  above 
and  below  the  points  named,  a  good  thermometer  being  available  for  temperature 
up  to  620°  Fahrenheit.  The  use  of  the  Reaumur  scale  is  confined  exclusively  to 
Germany  and  Russia,  while  the  Centigrade  scale  is  used  throughout  the  rest  of 
Europe.  The  Fahrenheit  scale  is  confined  to  England,  her  colonies  and  the  United 
States  of  America.  x 

A  variety  of  circumstances  arise  in  which  it  becomes  necessary  to  convert  read- 
ings from  one  scale  into  those  of  the  others,  in  which  case  the  following  rules  are 
to  be  observed: 

1.  To  convert  Centigrade  degrees  into  degrees  of  Fahrenheit,  multiply  by  9, 
divide  the  product  by  5  and  add  32. 

2.  To   convert    Fahrenheit  degrees  into  degrees  of  Centigrade,  subtract  32, 
multiply  by  5  and  divide  by  9. 

3.  To  convert  Reaumur  degrees  into  degrees  of  Fahrenheit,  multiply  by  9, 
divide  by  4  and  add  32. 

4.  To  convert  Fahrenheit  degrees  into  degrees  of  Reaumur,  subtract  32,  mul- 
tiply by  4  and  divide  by  9. 

5.  To  convert  Reaumur  degrees  into  degrees  of  Centigrade,  multiply  by  5 
and  divide  by  4. 

6.  To  convert  Centigrade  degrees  into  degrees  of  Reaumur,  multiply  by  4  and 
divide  by  5. 

No. 
2330    Hygrometers,  Mason's.     Mounted  on  wood  back,  plated  scale. 

Each $  3.50 


2331 


2332 


Daniels'.     With  burnt-in  gold  rings,  mounted  on 

polished  wood  stand;  fine  German  made. 
Each 4 . 50 

Denoting  humidity  (percentage  of  moisture)  without 
reference  to  tables.  The  simplest  and  best  form, 
constructed  entirely  of  metal  and  glass,  finely 
nickel-plated.  Diameter.  3  inches, 1 .00 


JOHN  TAYLOR   &  CO.,  SAN  FRANCISCO,  CALIF. 


127 


SAND  GLASSES, 
HYDROMETERS. 


2333 
No. 

2333    Sand  Glasses 


Each 


2336 


5          10          15          45          60  minutes 
;.80        .90        1.00       1.25       1.50 


2334  Doable  Form,  graduated,  1  to  15  minutes,  reversible.     $  1.25 

.50 


2336     Hydrometers,  Acid,  Beaume's,  0  to  70. 
Each .  . 


2337 


Pyle's  make,  graduated 

20  to  30,  30  to  40,  40  to  50,  50  to  60,  60  to  70 


Each 


2338 
2339 
2340 
2341 
2342 
2343 
2344 
2345 

2346 
2347 


Alkali,  Beaume's,  0  to  50. 
Each .  . 


Alcohol,  Tralle's  and  U.  S.  C.  H.  scale,  1  to  100. 
Each 

Same,  with  thermometer. 

Each 

Ammonia,  Beaume's,  10  to  40. 

Each 

Bark,  Beaume's,  0  to  60- 

Each 

Beer,  Beaume's,  0  to  50. 

Each 

Cider,  Beaume's,  10  to  30. 

Each 

Coal-oil,  standard,  as   adopted   by  U.  S.    Petroleum 

Association,  Beaume's  scales,  10  to  90,  in  y°. 
Each 

Same,    with    thermometer,    combined,    standard,    as 
adopted   by  U.  S.  Petroleum   Association,    Beaume's 
scale,  10  to  90,  in  #°,  10  inches. 
Each 

Same  as  above,  12  inches. 
Each .  . 


1.75 
.50 
.75 

1.50 
.20 
.50 
.50 
.50 

.50 

2.00 
3.00 


NOTE— Nos.  2345-2347  range  for   all  grades.     Petroleum,  18°  to  32°;  Coal-oil,  33°  to  45 c 
Naphtha,  to  74°;  Gasoline,  to  85°. 


128 


JOHN   TAYLOR   &   CO.,    SAN   FRANCISCO,    CALIF. 


No. 
2348 

2349 
2350 
2351 
2352 

2353 
2355 

2356 

2357 
2358 

2359 

2360 
2361 

2362 

Hydrometers,  Ether,  Beaume's,  10  to  80. 
Each                               

$  .50 
.50 
.50 
.50 

.50 

.75 

.75 
.75 

3.00 

.75 
.75 

.75 
.75 

.75 
.75 

.75 

1.25 
.50 

TVfilk     "Rriiirnrf'c     O  tr\  1  9O 

Each  

XVli'lla.nil     "Rr-'iiimr.'c     O  tr»   QO 

Each  

.  ..                  Snlf    "Rpniitnf'c    O  to  1  0O 

Each  

SJon.   wit  ot*      Ai*    Sfili  ti  A  in  A^AI*      T^ointnr^'c     fVirf*o  cr*i1f*Q 

on   the    stem,    temperature    190,    200    and    210°, 
and  0  to  %2. 

Each  

.  SMPC  In)  rniti<'i<kr<>i    TSriv'    urn  Hunted 

0  to  30,  30  to  60,  30  to  90,  60  to  90 

I/O 

0  to  5,  0  to  15,  05to  25,  5  to  15,  10  to  20,  25  to  35 

I/   0 

—5  to  +5,  0  to  30,  30  to°60,  60  to  90,  60  to  100 

y*° 

Graduated  for  temperature   of  17^°  centigrade 
Each  ".        

SmuMHf*   oravitv     fnr  licrVit  1iniiiH«      1    700    tr>    1    000 

Beaume  and  specific  gravity  scale. 
Each  

Snppifip  ffrnviHr    for  hpaw  UnniH*;    1  000  to  2  000 

Each  

Knppifif*  o-ravifv     TTni\rfrefl1     0  7000   to   9  000   with 

thermometer. 
Each  .                       

Twflddpll'«      "NTo     1          0    to     94  into    i/n    Q  inrVies 

2,     24   '       48      '     y2t  9       '       .. 
3,     48    '       72      '     YZ  ,  9       ' 
4,     72   <     108      '     y2,  9       '       .. 
5,  108    '144      '     y2,  9       '       .  . 
6,  144   '180      '     tf,  9       '       .  . 

printed  directions. 
Each                      .                                  

jar. 
Each  

ViliPP'ar    0  to  R    in   */      D  to  8    in    i/ 

Each,  . 

JOHN    TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


129 


FIRE    TEST,   AREOMETERS,   JARS. 


2371 


2370 


2372 


2365 


2375 


No. 

2365  Coal-oil  Fire  Test.      To  find  the  temperature   at  which   the   oil 

will   flash   or  explode.     A  thermometer  suspended  in  copper 
vessel  containing  the  oil,  surrounded  by  copper  cup  containing 
water;  lamp  underneath  surrounded  by  copper  hood. 
Price,  complete $  5 . 00 

2366  Extra  glass  cups  for  above .30 

2370  Areometer,  Nicholson's.   For  taking  (without  use  of  a  balance)  the 

specific  gravity  of  specimens  of  ores,  or  any  solid  sub- 
stance not  weighing  over  1000  grains. 
Brass,  with  glass  jar     Price,  without  weights 4.50 

2371  Glass.      "        "      "          "  "  "       2.75 

2372  Apparatus  to  Determine  Amount  of  Water  in  Milk.    Showing 

the  percentage  of  water  by  volume,  according  to  Fuchs. 
Each 2.00 

2375    Jars,  Hydrometer,  on  foot. 

Height 6              8  10  12  15  18  20    in. 

Diameter 1             iy2  iy2  2  2  2  2 

Each $.25         .35  .40  .55  .60  .85  1.00 


130 


JOHN   TAYLOR   &  CO.,  SAN    FRANCISCO,  CALIF. 


TRIANGLES,  TRIPODS. 


2382 


2381 


2384 


2383 


2380 


2390 


2391 


2394 


2392 


No. 


2380     Triangles.     Wire;  pipe-stem  covered  ;  small,  medium  and  large. 

Each ; $     .10 


2381 

2382 
2383 

2384 


With  porcelain  tubes,  flanged,  on  tin  wire. 

Sizes Small.  Medium.  Large. 

Each $  .25  .35  .45 


Not  clayed. 

Each $     .06 

Adjustable.  This  holder  is  nickel-plated  and  will 
accommodate  any  size  triangle  up  to  100  cubic  centi- 
meters. 

Each 1.25 

Solid  platinum  wire,  inside  of  an  iron  ring,  after 

Fresenius. 
Assorted  sizes $1 . 00  to  2. 00 

2390    Trip  ds.     Hard  twisted  wire  ;  japanned  ;  5%  inches  high. 

Each $     .20 


2391 
2392 

2394 


Brass ;  dissectable  ;  for  alcohol  lamp. 
Each . .  


.75 


Iron. 

Number  of  rings 123 

Each $  .35     .40      .50 


456 
.75      1.00     1.25 


With  7  rings  and  jacket  complete. 

Each  .  $  2.00 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF.  131 

SUPPORTS    FOR    BURETTES, 
FUNNELS,    ETC. 


CN£ 


2395 


2396 


2397 


2398 


2403 


V 


2400 


2399 


2404 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


SUPPORTS. 


No. 
2395 


2396 

2397 

2398 
2399 

2400 
2403 
2404 

2405 
2406 


2405 

Supports,  triangular. 

Size 

Rod 

Each .  . 


2406 

Base  and  rod  only,  for  use  with  any  clamp. 

Small         Medium       Large     Ex.  Large 
16  20  24  36    in. 

$   .40  .50  .75  1.00 


Square.     Base  and  rod  only,  for  use  with  any  clamp.  Length  of 
rod  same  as  No.  2495. 

Size    Small  Medium  Large 

Each $  .35  .50  .75 

For  burettes. 

With . . 


Iron  base,  rod  and  clamps. 
1  2 


Each 

For  burettes. 

Square  base. 

Rings 

Each .  . 


$  .90  1.40  1.90 

Iron,  with  1  double  Hofmann  clamp .... 


Triangular  base. 

Rings 

Each 

Extra  rings  for  above. 

Diameter  of  Ring.. 
Each. . 


$   -60 

2 
$  .60 


2 
.15 


3 
.20 


3 
.75 

3 

75 

4 
.25 


Supports,  for  burettes. 

For 

Each 


Hard  wood,  lined  with  cork. 

1 

$1.00 


2 
.50 


clamps. 
$  1.50 

4 
1.00 

4 
1.00 

5     in. 
.30 

burettes 


For  4  burettes,  with  perforated  corks  in  lower  arm $  1 . 25 

For  burettes,  Chaddock's.  With  round  milk  glass  plate,  black 
walnut  base  with  porcelain  plate,  clamp  of  japanned  spring 
wire  on  turned  maple  upright;  thumb  opens  the  rubber  covered 
V-shaped  jaws,  which  close  upon  the  burette  and  hold  it  firm 
and  true. 

For 1  2     burettes 

Each $1.75  2.75 


JOHN   TAYLOR    &   CO.,    SAN   FRANCISCO,  CALIF. 


133 


2407 


2408 


2409 


I'llllllllllllllll'l  HIM!  i|lll!IIIIMII',lll|l  IMI!'IM-illl|i|ll 

2410 


2412 


No. 

2407     Supports,  One  arm  for  1  funnel. 
Each .  . 


$  1.00 


2408  For  funnels.     Two  arms,  for  2  funnels,  with  extra  plate 

for  2  smaller  funnels. 
Each . .  .  . , 


1.50 


2409 


For  2  small  funnels. 
Each  . 


1.26 


2410 


With  1  double  arm,  for  4  small  funnels. 
Each . . 


1.25 


2411 


With  2  separate  adjustable  arms  for  funnels. 
Each .  . 


1.50 


2412  With  movable  screw  clamps. 

Each .  . 


1.50- 


134 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


SUPPORTS,    COMPASSES, 


2415 


2418 

No. 

2415     Supports,  for  funnels  ;  height  adjustable,  6  funnels  in  one  line. 
Each..  


$  2.00 


2418    Compasses.     4  inches  diameter,  needle  3  inches.    With  folding  hook, 
with  ball  movement  and  hair  sights;  socket  lor  staff; 
each  in  mahogany  box;  metal  faces,  double  dial,  all 
graduated  to  single  degrees;  jeweled  bar  needles. 
Bach. 15.00 


BRUNTON'S  PAT  INI    POCKE 


MINE      RANSr 


Cut  about  one-half  size. 
2419. 


No. 
2419. 


The  accompanying  illustration  shows  this  valuable  instru- 
ment as  it  appears  to  the  operator  when  taking  courses 
or  horizontal  angles.  A  tripod  or  Jacob's  staff  is  un- 
necessary, as  the  sighting  and  reading  are  accomplished 
simultaneously.  The  lightest  and  most  convenient 
pocket  instrument  on  the  market.  Dimensions  when 
folded  for  the  pocket,  2^x2^x1  inches. 

Price $25 .00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


135 


2420— Open. 


2420— Closed. 


2421-5 


2426 


2427 


136  JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


No. 

2420  Compasses.     For  Miners.     With   folding   down  sights  and  clinometer  for 

getting  dip  angle  of  a  quartz  ledge.  Metal  dial,  graduated 
into  single  degrees;  also  cardinal  points  of  the  compass. 
Needles  jeweled,  all  with  socket  and  universal  movement, 
to  mount  upon  a  Jacob  staff.  The  top  of  the  sights  are  pro- 
vided with  hooks,  so  they  can  be  suspended  upon  a  line 
stretched  along  the  drift. 

Diameter,  case 3  4      in. 

Length  of  needle 2  4 

Each $9.00  11.25 

The  above  compass  has  no  levels,  as  it  is  difficult 
to  place  them.  With  a  clinometer,  the  needle 
always  resting  in  a  horizontal  position,  will  serve 
for  a  level  ordinarily;  but  we  can  furnish  a  circular 
level,  to  be  placed  upon  the  glass  cover,  which  can 
be  carried  in  the  vest  pocket. 

Each $1.00 

Pocket,  with  cardinal  points. 

2421  A.     Brass  case,  nickel-plated  ;  pull-off  cover  ;   1^   in. 

diameter  ;  paper  dial  reading  single  degrees. 
Each 50 

2422  B.     Brass  case,  nickel-plated  ;  thick,   bevelled  glass 

cover;  2  in.  diameter;  jeweled  needle;  metal,  silvered 
dial  reading  two  degrees;  needle  lift  to  protect  point 
in  carrying. 
Each 1 . 00 

2423  C.     Same;  2^  in.  diameter. 

Each 1 . 25 

2424  D.     Miner's  Pocket.     2  in.  paper  dial,  reading  two 

degrees.  All  in  mahogany  case  3x3  in.,  with  hinge 
lid  which  when  closed  lifts  the  needle  from  point. 
Each 80 

2425  E.     Same.     Metal,  silvered  dial. 

Each 1.25 

2426  Miner's  Pocket,  with  clinometer.     To  find  the  incli- 

nation of  quartz  ledges.     2>£    in.   diameter;   2   in. 
needle;  jeweled,  nickel-plated,  in  velvet  lined  case. 
Each .          4 . 50 

2427  Clinometer,  boxwood.     With  two  levels,  compass, 

inclination    scale,    and     folding-down    sights.       In 
leather  case  for  the  pocket. 
Each.. 15.00 

2428  Atwood's    mining   clinometer   and   compass,   with    a 

table   of  fall  of  angles,  with  two  levels  at  right 
angles,  with  sights,  all  mounted  in   a  rectangular 
metal  open  frame,  6>£x3x^  in.,  in  leather  case. 
Each.. 15.00 


JOHN  TAYLOR  &   CO.,  SAN   FRANCISCO,  CALIF. 


137 


LEVELS,  RETORTS,  RECEIVERS,  ADAPTERS, 

CONDENSERS. 


2430 


2436 


2445 


2450 


2451 


No. 
2430     Hand  Level,  Locke's,  brass,  for  use  in  drawing  lines  in  tunnels, 

in  leather  case $  7 . 50 

2435  Retorts,  Bohemian  glass,  plain. 

Capacity...           24           8         16     32  oz.     >^           1  2  gal. 

Each $   .20     .25       .30       .35       .45       .60       .90  1.50 

2436  Bohemian  glass,  with  tubulature  and  glass  stopper. 

Capacity 2             4             8             16  32  oz. 

Each $   .25        .30         .35           .55  .70 

Capacity ^1234  5  gals. 

Each $.90     1.30     2.25    3.75     5.00  6.00 

2440     Receivers,  glass,  plain  or  tubulated,  same  prices  as  glass  retorts,  catalogue 
numbers,  2435-6. 

2445     Adapters,  glass,  for  connecting  retort  with  receivers,  either  bent  or  straight. 

Diameter  at  large  end. .          %         1         \%         2         2^  3  in. 

Each $.25      .30       .35       .40        .45  .50 

2450  Condensers,  Liebig's,  both  outer  and  inner  tube  of  glass,  mounted  on  wood 

supports,  universal  movements. 

Length 12               18               24  30  in. 

Price $1.50          1.75          2.00  3.00 

2451             Unmounted.                        1.00           1.25           1.50  2.25 


138 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


STILL  AND  CONDENSER,  ALEMBICS, 

RETORTS. 


2453 


2457 


2454 


2456 


2455 


No. 

2452  Condensers,  Inner  tubes  only,  can  also  be  used  as  adapters  for  glass 

retorts. 

Length 19  26  33  40          50  in. 

Each $.25         .35  .55  .65         .85 

2453  Still  and  Condenser,  combined,  Liebig's,  all  glass,  10  inches  long. 

Each .  $  1.25 


2454     Alembics,  ground  stopper. 

Capacity 

Each .  . 


2 
$  .50 


4 

.75 


8      oz. 
1.00 


2455  Condenser  or  Rectifier,  glass  worm  inside  of  glass  tube. 

8    inches  long,  1  inch  diameter,  each $  .75 

12       "         "     1    "  "  " 2.50 

2456  Eetorts,  German  Porcelain,  for  very  high  heat,  glazed  inside,  stoppered. 

Capacity 4  8  16  32     oz. 

Each $    .25        1.50          1    .75  2.50 

2457 Copper,  for  generating  oxygen  with  iron  clamp  and  brass  delivery 

tube. 

Capacity yz  1  2  4    pints 

Each $2.00  2.25          2.75          3.50 


JOHN  TAYLOR   &  CO.,  SAN   FRANCISCO,  CALIF. 


139 


RETORTS,  GAS   BAGS,  GASOMETERS, 

PUMPS. 


2463 


2460 


2462 


2465 


2464 


No. 

2460  Retorts,  Brass.  The  tube  6  inches  long,  1^4  inches  in  diameter. 
A  small  portion  of  the  chemicals  can  be  reduced  first, 
then  the  burner  moved  under  fresh  portion  without 
generating  too  rapidly;  mounted  on  board,  with  elevat- 
ing device  to  suit  the  flame. 
Each $  1 . 75 

2462  Sheet  iron,  12x2  inches,  mounted  upon  iron  stand,  with 

Bunseu  burner. 
Each $  9.00 

2463  Gas  Bags,  rubber,  bulb   shape,   for  collecting  oxygen,   fitted  with 

brass  stop-cock  and  rubber  stopper. 

Capacity 1  2  3  4  5  gals. 

Each $200        2.50        300        3.50        3.75 

Prices  will  be  given  for  larger  sizes. 

2464  Gasometers,  of  galvanized  sheet  iron,  japanned,  a  new  and  cheap 

form  simplified  by  Taylor.  No  escaping  of  gas,  a 
convenient  means  for  measuring  quantity  of  gas 
contained  or  used. 

Capacity..     5          10         20         25         40         50         80  gals. 

Each $7.50   10  00   12.50   14.00   16.00  20.00   25.00 

2465  Transfer   Pump,  brass  barrel,  1^  inch  bore,  16  inches  long,  with 

cup  leather  packing,  forcing  both  ways,  in  or 
out,  Taylor's  improved  balance  valve  for  in- 
ward and  outward  flows,  all  mounted  upon  foot- 
boards. 
Each  $12 . 50 


140 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


STILLS,  CONDENSERS. 


2470 


No. 

2466     Stills  and  Condensers,  copper,  tin  lined,  for  distilling  water,  tinc- 
tures, etc. 

Capacity %  1  2  3  gals. 

Each $9.00     12.00     14.00     16.00 


2467 


Copper  Still  only. 
Each .  . 


..00  8.50   9.00   10.00 


2468 


2470  — 


Condenser  only. 

Each $3.00     3.50 

Larger  sizes  furnished  to  order. 


500       6.00 


Jewell's  No.  4.  Capacity,  one-half  gallon  per  hour.  Espe- 
cially adapted  for  domestic  use,  and  owing  to  its  simplicity, 
ease  of  operation  and  durability,  is  generally  preferred  over 
any  other  form  for  use  in  the  kitchen  or  pantry.  It  certainly 
cannot  be  excelled,  and  is  not  equalled  by  anything  on  the 
market.  The  Stills  are  fitted  complete  with  brass,  gas  and 
water  cocks,  block  tin  pipe  water  connections,  and  adjust- 
able bracket  for  holding  bottle  or  other  receptacle  for 
distilled  water.  The  burner  is  of  the  standard  Bunsen 
type,  with  special  gauze  tip;  does  not  "  pop  back "  or 
smoke  under  any  conditions,  and  burns  a  beautiful  blue 
flame.  The  cover  on  the  Still  is  made  of  polished  copper. 
The  "retort"  and  "condensing  jacket"  are  in  one  piece. 
All  parts  are  interchangeable  and  readily  accessible. 

Price $15  00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


141 


CONDENSERS,  EXTRACTION  APPARATUS, 

TROUGHS. 


2490 


2500 


2503 


f    . 


2491 


2502 


2495 


No. 


2490     Condensers.     For  sulphuric  acid.     With  one  bulb  and  two  stop- 
cocks. 
Each $  2 . 75 


2491 


Same.     With  two  bulbs  and  three  stop-cocks. 
Each .  .  


3.00 


2495     Extraction  Apparatus,  Soxhlet's.     Complete  with  flask  and  condenser. 

Capacity  ....................  2  4  6  oz. 

Each  .......................       $2.60          3.00  4.00 

2500     Troughs,  pneumatic.     Japanned  tin,  with  sliding  perforated  shelf 

and  overflow  pipe. 

Size  ............     5x7x9         7x9x12  8x9x12         8x11x15  in. 

Each  ...........      $1.50           2.00  2.50                 3.00 


2502 
2503 


Mercury;  porcelain;  cross  form;  holds  6  Ibs.  mercury. 

Each  ..............................................     $  1.00 


Same  ;  oblong. 

Capacity 

Each . . 


8 

$1.25 


16  Ibs. 
1.50 


142 


JOHN  TAYLOR   &   CO,  SAN    FRANCISCO,  CALIF. 


PLATINUM. 


2510 


2511 


2510 


2512 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CAUF. 


143 


PLATINUM, 


Our  stock  of  platinum  is  the  best.  The  crucibles  and  dishes  are  hammered  up, 
not  spun,  consequently  are  solid,  durable  and  will  not  blister.  Our  prices  are  the 
market  rates,  which  fluctuate.  The  foil  and  wire  sold  by  the  grain. 

Pure  platinum  being  a  very  soft  metal,  scarcely  harder  than  gold,  it  is  essential 
for  durability  that  it  be  alloyed  with  a  small  percentage  of  iridium.  Every  chemist 
will  appreciate  the  superiority  of  utensils,  made  of  this  alloy,  over  pure  platinum, 
since  the  former  are  much  harder  and  more  tenacious,  besides  offering  a  greater 
resistence  to  the  action  of  chemical  agents,  an  alloy  of  platinum  with  10%  iridium 
being  but  slightly  attacked  by  aqua  regia.  This  result  seems  to  be  due  to  the 
formation  of  a  thin  film  of  iridium  upon  the  surface  of  the  utensils  in  use,  which 
renders  them  indifferent  to  most  chemical  action. 

Estimates  given  for  all  kinds  of  platinum  ware  for  chemical  and  laboratory 
purposes.  Old  dishes,  crucibles,  etc.,  repaired,  reshaped,  and  purchased. 

No. 

2510 


Crucibles,  plati 

mes 

Capa 

num. 

as  they  ' 

city  in  " 

With  covers,  weighing  a 
lold  cubic  centimeters,  £ 

£  8           Wei 

pproximatel 
is  follows  : 

ght  in  grami 
< 

< 

1 
< 

f 

( 

1 
< 
1 

1 

< 
( 

y  as  many  gram- 
mes       8 

10 

10 

.      12 

11 

15 

14 

20 

18 

25 

24 

.     30 

.    .   27 

35 

33 

.     40 

37 

45 

44 

50 

51 

55 
60 

56 

62 

70 
80 

65 

68 

90 

70 

100 

:  80 

110 

.   90 

Covers  are  always  furnished  with  crucibles  unless  otherwise  ordered.    Crucibles 
of  other  weights  and  capacities  made  to  order.     Prices  on  application. 

2511  Crucibles,  According   to   Dr.    Gooch,   with   perforated  bottom,    cover   and 

extra  cap. 
Prices  on  application. 

2512  Platinum.     Gooch  form,  with  covers  and  caps,  weigh  as  follows: 


Capacity  in 


10  Weight  in  grammes 13 

12  "  "          16 

15  "          18 

20  22 

25  "  "          29 

30  "                 "                   .34 


Coarse  or  fine  perforation.      Covers  are  always  furnished  with 

crucibles  unless  otherwise  ordered. 
Prices  on  application. 
Illustration  No.  2512  full  size  from  12  %  to  30  %  inclusive. 


144  JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


No. 

2513  Cones,  platinum.  Seamless  Filter,  60°,  coarse  or  fine  perforations.  Sold 
by  the  piece.  Stock  sizes  as  follows,  others  to  order: 

Diameter Y±         fa         1%         I*/?,          1^          2  inch. 

Prices  on  application. 

2514-15  Flexible  filter.  Full  or  three-quarters  circle,  coarse  or  fine  per- 
foration, adjustable  to  any  angle.  Sold  by  the  piece.  Cut  No. 
2514  shows  flexible  cone  before  folding;  cut  No.  2515  shows  cone 
folded  to  fit  funnel.  Stock  sizes  as  follows: 

Diameter,  folded,     ^         fa,         1         \%         1^         1^         2  inch. 

Prices  on  application. 

2520  Dishes,  platinum.  With  lips,  best  hammered  ware.  Platinum  dishes 
weigh,  approximately,  ^  as  many  grammes  as  their  capacity  in 
cubic  centimeters. 

Nos 9          8          7          6  5 

Weight 8          14         22         82          48  grammes 

Capacity 20         30         45         86         125  % 

Nos 4  3  2                 1 

Weight 65  90  125  150  grammes 

Capacity 200  270  370  400  % 

Prices  on  application. 

2525     Boats,  platinum.     All  sizes,  shapes  and  weights,  ranging  from  3  /{  to  10  % 

and  from  4  grammes  to  8  grammes. 
Prices  on  application. 

2530     Spoons,  deflagration,  of  platinum,  for  blowpipe  analysis,  with  or  without 
covers.     Sold  by  the  piece. 
Bowl,  YZ  inch  diameter,  5/l6  inch  deep. 

Prices  upon  application. 

2532          —       For  qualitative  analysis.     This  spoon  will  be  found  especially  handy 

in  fusion  work. 
Prices  upon  application. 

2535  Spatulas,    platinum,    all  shapes,    weights   and   sizes — to    sketch. 

Shapes  and  weight,  ranging  from  3  grammes  to  15  and 
heavier,  according  to  size,  shape  and  thickness.  Prices 
upon  application. 

2536  Sponge,  platinum. 

Bach $   .35 

2540    Platinum  Cylinder  and  Spiral,  for  quantitative  determination  of 

copper  by  electrolysis.  Standard  forms,  weights 
ranging  Irom  10  to  30  grammes;  other  sizes,  shapes 
or  weights  to  order.  Prices  upon  application. 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


145 


2513 


2514 


2515 


2520 


2525 


2530— Fig.  1 
Full  Size. 


2530-Fig.  3 
Full  Size. 


2530— Fig.  2 
Full  Size. 


146 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


PLATINUM  WARE, 
SILVER  CRUCIBLES 
AND   DISHES. 


2535 


2532— Full  Size. 


No. 

2545 


2540 


Sheet  or  Foil,  platinum. 

Thickness,  %000  in.,  approximate  weight  per  square  in, 

«      3/    «         "  "        ««  " 

/looo 

/IOOO 

ic       s/     «          ic  »i  K 

/IOOO 

c<      io/     '<          "  "  " 

/looo 
«<      iS/     •<          «  " 

And  thicker  to  Ia5/ 


2536 


10  grains 

17  " 
22  " 
30  " 
50  " 
82  " 


000 


in. 


Prices  upon  application. 


2546 


Wire,  platinum. 

Diameter,  %000 


n. 


/IOOO 

«       iS/ 

/IOOO 
<  <          2O/ 

/IOOO 

/looo 
3o/ 

/IOOO 

«<      3S/ 

/IOOC 

«      4o/ 

/IOOO 

4/Iooo 
««       So/ 

/IOOO 
/IOOO 

<«      6o/ 

/IOCO 

«      65/ 

/IOOO 

Larger  sizes  up  to 


approximate  weight,  per  foot 3  grains 

"                "            "        7 

<{                 <i             «  ^2  " 

........  19  " 

32  " 

47  " 

61  ." 

72  " 

•«                "             ««        96 

110  " 

145  " 

180 

.  220  " 


inch  or  "s/lo 


Prices  upon  application. 

2550  Crucibles,  silver,  with  covers,  same  shapes  as  platinum  crucibles. 

For  sizes  see  illustrations  page  142.     Prices  upon  ap- 
plication. 

2551  Dishes,  silver,  same  shapes  as  platinum  dishes.     For  sizes   see 

illustrations  page  145.     Prices  upon  application. 


JOHN  TAYLOR  &  CO.,  SAN   FRANCISCO,  CALIF. 


147 


CRUCIBLES,  CALCIUM    CHLORIDE  TUBES, 
COMBUSTION   BOATS. 


2575 


2576 


2577 


2579 


2580 


No. 
2560 


2562 


2505 


Dishes,  Evaporating,  of  pure  wrought  nickel,  with  lip. 

Diameter 2  2#  3 

Capacity 35  70  125 

Each $   .60  .70  1.00 

Crucibles,    of  pure  wrought  nickel. 

Diameter 13/6  Ifi 

Capacity 20  30 

Each $  .75  .90 

Tubes,  Combustion,  Royal  Meissen  porcelain,  glazed  inside. 

Diameter }4  ZA  1  IX 

Length 24  24  24  24 

Each $1.10        1.50        1.75        2.00 

For  glass  combustion  tubing,  see  page  106,  catalogue 


2568 


2575 


2576 


2577 


2578 


2579 


2580 


Boats,  combustion,  porcelain. 

Length 

Width 

Each . .  


$   -25 


234 

% 

.25 


334 

% 
.30 


Tubes,  calcium  chloride.    With  one  bulb. 

Length 

Each . .  


Same.     With  two  bulbs. 

Length 

Each .  . 


Same.    U  shaped,  plain. 

Length  ..................         4 

Each  ....................  $    .15 

Same.     U  shaped,  with  side  tubes. 

Length 

Each  .  . 


6 
.25 


8 
.30 


10 

.40 


Same.     Woehler's.     With  three  bulbs. 

Length 

Each  ...  


Same.     Marchand's. 

Length 

Each . . 


334  in. 
225% 
1.40 


2  in. 

7^  c/ 

•°  /c 

1.15 


1      in. 
24  in. 
2.50 
No.  2101. 


}     n. 

IX 
.35 

Sin. 
$  .20 

10  in. 
$  .25 

12  in. 
.50 

6  in. 

$  .40 

6  in. 
$  .45 

5  in. 
$  .50 


JOHN  TAYLOR   &  CO.,  SAN   FRANCISCO,  CALIF. 


TUBES,  CYLINDERS,  PRISMS. 


2582 


2585 


2587 


2590 


2592 


2600 


No. 

2582    Tubes,  calcium  chloride. 

With .' 

Kach . . 


1 
$  .20 


2 
.25 


3  bulbs 
.35 


2585 


Same.     Liebig's  form,  one  arm*  double  bend,  3^  in.  bulb. 
Each 


$.40 


2586 


Same.     Double  bend,  5  in.  bulb. 
Each , .  


.50 


2587 


Same.     Mitscheriich's  form,  one  arm,  double   bend;  one 

arm  tubulated,  2  in.  bulb. 
Each  .  


.50 


2590 


Same,  upright,  jar  form,  side  opening  near  the  bottom. 

Height 8  12  16  in. 

Each. .  $   .60         .80         1.25 


2592 


Elliot's. 

Height, 
Each  . 


8  in. 
.60 


2600     Prisms,  finely  polished,  angle  60  degrees. 

Length 3  4  5  6  8  in. 

Each $.30         .40         .50         .60         .80 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


149 


BOTTLES. 


2605 


2606 


2610 


No. 


2605     Bottles,  Wide  mouth,  ground  glass  stoppers. 
Capacity ...          ^  1  2 

Dozen $  .75        1.00      1.50 


3 

1.75 


4 
2.00 


2612 


6 

2.25 


8oz. 
2.50 


2606 


Narrow  mouth,  with  ground  glass  stoppers. 

Capacity...       ^      1        2          34          6        8        12         16  oz. 

Dozen..      .  $  .75    .75   1.00   1.15   1.25   1.50   1.75   2.25     2.50 


2610 


2612 


Tincture,  mushroom  stoppered. 

1  ounce,  height    3^  inches,  per  dozen $  2.00 

2  "           "         3^       "  "  2.00 

4      "           "        5^      "  "  250 

8      "           "        7#      "  "  3.00 

16      "           "        8^      "  "  3.25 

1  quart,       "       10^       "  "  4.00 

^gallon,     "       13#      "  "  7.50 

1  "           "       15          "  "  12.00 

2  "           "       19          "  "  30  00 

Salt  Month,  mushroom  stoppered. 

1  ounce,  height    3^  inches,  per  dozen $  2.50 

2  "           "         3^       "  "  2.50 

4      "           "        5>^      "  "  .  2.75 

8      "           "         65/8      "  "  3.25 

16      "           "        8X      "  "  3.50 

1  quart,      "        9^      "  "  4  50 

^gallon,     "       12>^      "  "  8.50 

1  "           "       14>^      "  "  15.00 

2  "           "       17          "  "  36.00 


150 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,   CALIF. 


No. 
2615 


2615-20 

Bottles,  Reagent,  with  chemical  names  and  equivalents  in  raised 
letters  ground  on  the  surface;  made  from  glass  containing 
no  lead,  zinc  or  other  metallic  flux.  All  letters  ground 
to  make  them  perfectly  visible.  Any  names  not  on  the 
list  can  be  engraved  on  the  bottles  at  small  extra  charge. 
Please  order  by  numbers. 
In  sets  of  4,  labeled  Hydrochloric,  Sulphuric,  Nitric  Acid 

and  Ammonium  Hydrate. 
Capacity.  . .  4  8 

Per  set'....  $1.35  1.65 


16  oz. 
2.00 


2620 


Reagent,  capacity, 
inches. 


pint=4  ounces  =125  %;  height 


No. 

1 

2 

3 

4 

5 

6 

7 

8 

9 

10 
11 
12 
13 
14 
15 
16 
17 
18 
19 


Hydrogen  Sulphide  (amber) , .  H ,S 

Hydrochloric  Acid HC1 

Acetic  Acid HC.H3O2 

Sulphuric  Acid H2SO4 

Nitric  Acid HNO3 

Potassium  Ferrocyanide K4Fe(CN)6 

Potassium  Sulphocyanide KCNS 

Potassium  Carbonate KaCO3 

Potassium  Sulphate KaSO4 

Potassium  Iodide  . .  .  .KI 


Potassium  Ferricyanide 


K,Fe(CN)( 


Potassium  Hydroxide KOH 

Potassium  Bichromate KaCr2O7 

Sodium  Phosphate NaaHPO4 

Ammonium  Hydroxide NH4OH 

Ammonium  Sulphide  (amber). (NH4)2S 

Ammonium  Chloride NH4C1 

Ammonium  Carbonate (NH4^2CO3 

Ammonium  Oxalate (NH4)2CaO4 


No. 

20  Barium  Chloride BaCl  a 

21  Calcium  Chloride CaCl , 

22  Calcium  Sulphate CaSO4 

23  Calcium  Hydroxide Ca(OH), 

24  Magnesium  Sulphate MgSO4 

25  Mercuric  Chloride HgCla 

26  Silver  Nitrate  (amber) AgNO3 

27  Lead  Acetate Pft(n,IsO.). 

28  Ferrous  Sulphate  FeSO4 

29  Ferric  Chloride Fe,Cl6 

30  Alcohol C3HSOH 

31  Ammonium  Sulphocyanide.  .  .NH4CNS 

32  Barium  Hydroxide Ba(OH)a 

33  Barium  Carbonate BaCO3 

35  Ether (CaH5)aO 

86  Cupric  Sulphate CuSo4 

38,  39,  40  Blank. 

59  Sodium  Carbonate NaaCO3 

61  Sodium  Hydroxide NaOH 


2622 


Set  of  above,  40  bottles,  packed  in  shipping  order,  per  set.     $  7.50 

1  set  of  above,    40   bottles,    filled  with   chemically   pure 
reagents,  according  to  Fresenius,  per  set 15.00 


JOHN  TAYLOR  &   CO.,  SAN   FRANCISCO,  CALIF. 


151 


2650 


2645 


2640-1 


2655 


152 


JOHN   TAYLOR   &   CO.,  SAN'  FRANCISCO,  CALIF. 


No. 
2625 


Bottles,     Same  style  as  No.  2620. 


No. 
37 

58 
59 
60 
61 
77 
81 
82 
83 
86 
87 
88 
90 
93 
94 
96 


Platinic  Chloride PtCl4 

Fehling's  Solution. 

Sodium  Carbo  late Na2CO3 

Sodium  Acetate NaC2H3Oa 

Sodium  Hydroxide NaOH 

Ammonia NH3 

Stannous  Chloride SnCl2 

Ammonium  Molybdate  . .  .(NH4)2MoO4 

Carbon  Disulphide CSS 

Mercurous  Nitrate Hg2(NO2)2 

Indigo  Solution. 
Nessler's  Solution. 
Magnesia  Mixture. 

Oxalic  Acid H2C2O4 

Picric  Acid C6  H2OH(NO2) 3 

Potassium  Chromate K2CrO4 

Per  dozen  . 


No. 

97  Ammonium  Sulphydrate NH4HS 

100  Mercuric  Potassium  Iodide. 

401  Barium  Nitrate Ba(NO,). 

404  Silver  Sulphate Ag2SO4 

406  Bromide  Water. 

407  Chloroform CHC1, 

408  Cochineal. 

409  Coralline. 

410  Litmus. 

411  Methyl-Orange. 

412  Phenolphtaleiu. 

413  Turmeric. 

414  Iodine  Solution I  +  KI 

415  Methyl  Alcohol CH  3OH 

416  Sodium  Cobalt;c  Nitrite. 

417  Sodium  Hyposulphite Na2S2O3 

2 


50 


NOTE— The  above  bottles,  Catalogue  No.  2625,  numbers  37  to  417,  are  not  kept  in  stock; 
be  furnished  to  order. 


will 


2630  Bottles  Reagent.     Capacity,  %  pint=8  oz.=250  %  ;  height,  6^  in. 

No.  No. 

101  Sulphuric  Acid,  Con H2SO4  114  Barium  Chloride BaCl2 

102  Sulphuric  Acid,  dil H2SO4  116  Blank. 

103  Nitric  Acid,  Con HNO3  122  Ammonium  Sulphide  (amber)(NH4)2S 

104  Nitric  Acid   Dil HNO3  126  Alcohol C2HSOH 

105  Hydrochloric  Acid,  Con HC1  129  Sodium  Phosphate Na2HPO4 

106  Hydrochloric  Acid,  Dil HC1  130  Ammonium  Oxalate (NH4)aC3O4 

107  Hydrogen  Sulphide  (amber),  H2S  131  Acetic  Acid HC2H3O2 

108  Ammonium  Hydroxide !.NH4OH  W5  Silver  Nitrate  (amber) AgNO3 

109  Ammonium  Chloride NH4C1  150  Potassium  Hvdroxide KOH 

110  Ammonium  Carbonate (NH4)3CO3         151  Calcium  Hydroxide Ca(OH), 

111  Sodium  Hydroxide NaOH  152  Lead  Acetate Pb(C2H3O2)2 

112  Sodium  Carbonate Na3CO 

Per  dozen $  4 . 00 

2631  One  set  of  above  (23  bottles),  filled  with  chemically  pure  reagents, 

according  to  Fresenius $10 . 00 

2635     Bottles  Reagent.     Capacity,  1  pint=500  %  ;  height,  7^  in, 

No.  No. 

204    Ammonium  Hydroxide NH4OH  216    Nitric  Acid HNO3 

211     Blank.  217     Hydrochloric  Acid HC1 

215    Sulphuric  Acid H2SO4 

Per  dozen $  6.00 

2640     Bottles  Reagent.     Wide  mouth.     Capacity,  1  oz.=30%:  height, 
3/^  in. 

No.  No. 

350  Sodium  Carbonate Na2CO3  367     Potassium  Chlorate KC1O3 

351  Borax Na2B4O7  368     Potassium  Ferricyanide K3Fe(CN)6 

353  Sodium  Acetate NaC,H3O2          369     Sodium  Bitartrate NaHC4H4O6 

354  Potassium  Nitrate KNO3  370     Sodium  Nitrate NaNO3 

358     Potassium  Cyanide KCN  371     Starch . 

S61  Am.  Sod.  Phosphate....         NaNH4HPO4  372  Test  Paper. 

364  Copper Cu  373  Zinc. 

365  Ferrous  Sulphate FeSO4  374  Ammonium  Phosphate (NH4)2HPO4 

366  Ferrous  Sulphide FeS  375  Blank. 

Per  dozen  .  $  2 . 70 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


153 


No. 

2641     Bottles  Reagent.     Wide  mouth.  Capacity,  4  oz.=125  %;  height, 
4^  in. 

No.  No. 

Sodium  Carbonate NaaCO3  305 

Potassium  Nitrate KNO3  307 


301 
302 
303 
304 


Ferrous  Sulphate  ...........  FeSO  4 

Blank. 


312     Test  Paper. 


Potassium  Cyanide  ..........  KCN 

Borax  ......................  Na2B  O7 

Per  dozen  ...........................................     $  4.00 

NOTE—  The  above  bottles  catalogue  No.  2640-1.   Numbers  350  to  375  "and  301  to  312  are  not  kept 
in  stock  ;  will  be  furnished  to  order. 


2645  Bottle  Caps,  Reagent.  Loose  glass  caps  for  covering  the  necks  and  lips 
of  reagent  bottles  to  protect  stoppers  and  mouths  of  bottles 
from  dust.  Can  be  furnished  as  follows  : 


1^x2^ 
$1.00 


2^x3^ 
1.00 


2^x4^  in. 
1.00 


2650     Racks.     Of  polished  wood  for  reagent  bottles,  with  recess  for  each 

bottle  ;  to  hold  a  set  of  40  %-pint  bottles. 
Bach  .  $  7.50 


2655     Bottles   Reagent.     Capacity,    %    pint=4   ounce=125  %.     With  acid-proof 

labels,  symbols  blown  in  the  bottles  and  also  in  the 
stoppers.  The  main  features  of  these  reagent  bottles 
are  the  hood  stopper,  the  shape  of  the  lip  and  the 
raised  acid-proof  label. 

The  object  of  the  hood  stopper  is  to  prevent  an  accumu- 
lation of  dust  and  the  salts  deposited  from  the  atmos- 
phere of  chemical  laboratories  upon  the  lip  of  the 
bottle. 


No. 

10  Hydrogen  Sulphide  (amber). H2S 

20  Hydrochloric  Acid .HC1 

30  Acetic  Acid HC2 H 3O2 

40  Sulphuric  Acid H2SO4 

50  Nitric  Acid HNO3 

60  Potassium  Ferrocyanide K4Fe<,CN)6 

70  Potassium  Sulphocyanide  ..  .  KCNS 

80  Potassium  Carbonate K  2CO  3 

90  Potassium  Sulphate K2SO4 

100  Potassium  Iodide KI 

110  Potassium  Ferricyanide K3Fe(CN)6 

120  Potassium  Hydrate KOH 

130  Potassium  Bichromate K2Cr2C7 

140  Sodium  Phosphate Na2HPO4 

150  Ammonium  Hydroxide NH4OH 

160  Ammonium  Su1phide(amber)(NH4>2S 

170  Ammonium  Chloride NH4C1 

180  Ammonium  Carbonate (NH4)2CO3 

190  Ammonium  Oxalate (NH4),C2O4 


No. 

200  Barium  Chloride BaCl2 

210  Calcium  Chloride CaCl  2 

220  Calcium  Sul phate CaSO  4 

230  Calcium  Hydrate Ca(OH)2 

?40  Magnesium  Sulphate MgSO4 

250  Mercuric  Chloride HgCl , 

260  Silver  Nitrate  (amber) AgNO3 

270  Lead  Acetate Pb(C2H3O2) , 

280  Ferrous  Sulphate   FeSO4 

290  Ferric  Chloride Fe2Cl6 

300  Alcohol CaH3OH 

310  Ammonium  Sulphocyanide.  .NH4CNS 

320  Barium  Hydroxide Ba(HO)2 

330  Barium  Carbonate BaCO  3 

350  Ether (C,H5 )  2O 

360  Cupric  Sulphate CuSO4 

380,  390,  400 Blank 

590  Sodium  Carbonate Na2CO3 

610  Sodium  Hydroxide NaOH 


NOTE. — The  above  bottles  are  not  kept  in  stock.     Will  be  furnished  to  order. 

Per  set $18.50 


154 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


BLANK  LABELS,  CHEMICAL  LABELS. 


213 


c 


261 


258 


3004- 


No. 


2660     Labels,   Blank.      Heavy,    gummed    on   back,    for    marking    ore 
samples,  bottles,  etc.,  100  labels  in  a  box. 

Nos.  201,  2004,  per  box,  each 

"     205,  209,  219,  261,  259,  225,  per  box,  each 


25 
15 


2665  Labels,  Chemical.  In  books.  Compiled  by  Prof.  Chandler,  in- 
cluding all  the  most  important  chemicals  and  reagents;  good 
paper,  gummed  on  back  and  perforated;  any  one  can  be  removed 
without  destroying  the  book;  with  name  and  latest  formula, 
tables  of  atomic  weights,  etc. 

Per  book 


$  .65 


JOHN  TAYLOR  &  CO.,  SAN   FRANCISCO.  CALIF.  155 

ASSAY  CERTIFICATES,  HUMID  ASSAY 

OUTFITS. 

No. 

2666    Blanks  for  Assay  Certificates.    8^x5^  inches, 

ASSAY  OFFICE  OF 

No 

18 

j>5          I  HEREBY  CERTIFY,  That  the  ore  marked 

^  assayed  for   yielded  at  the  rate  of 

w ozs.  Gold  per  ton ; ")          Remarks 

fe   ozs.  Silver  per  ton; 

5 per  cent.  Lead; 

2 per  cent.  Copper; 

<!  Value  Gold  at . .  . .  per  oz .  . 

rl 

Silver  at per  oz 

' '      Lead  at per  cent ..... 

&      ' '      Copper  at per  cent j 

W 

o 


Assayer. 

Per  100 $     .50 

With  name,  per  1000 3.50 

The  above  form  is  on  a  reduced  scale,  the  regular  size  of  the  Assay  Certificate  being  8j4*5}4 
inches. 

2670  Humid  Assay.    Copper  Tank.   According  to  Gay  Lussac.    Complete 

for   normal  solution — capacity   70  litres.     Provided 
with  silver-lined  cock  and  glass  vent  tube,  arranged 
to   prevent  evaporation.     The  tank   is   lined  inside 
with  tin. 
Each '. $20. 00 

2671  Graduated  Cylinder.    Capacity,  1000  %. 

Each 2 . 75 

2672  Bull)   Pipette.       100   cubic  centimeter    graduations. 

Cemented  to  brass  silver-lined  cock,  with  air  vent ; 
all  mounted  upon  iron  bracket. 
Each 12  00 

2673  Black  Rubber  Tubing.     6  feet— to  connect  tank  with 

pipette — with  brass  compressor. 
Price 1-15 

2674  Twelve  Humid  Assay  Shaking  Bottles,  with  pure 

rubber  stoppers;  each  bottle  is  numbered. 
PerDoz 6.00 

2675  Carrying  Tray.     For   12  bottles;   of  japanned   tin, 

recess  for  each  bottle;  numbered  to  match  the  bottles. 
Each,  without  bottles 9-00 


156 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


2681 


2676 


No. 


2676  Humid  Assay.     Shaking  Table.     For  12  bottles ;  arranged  to  be 

driven  by  hand  or  power.     Six  of  the  bottles  can  be 
moved  without  disturbing  the  other  six.    All  movable 
parts  complete,  and  balanced  for  high  speed.    Bottom 
and  top  of  each  bottle  cushioned. 
*  Price,  without  bottles $50.00 

2677  Three  Glass-stoppered  Bottles.     For  decimal  solu- 

tion ;  capacity,  32  oz. 
Price 1 . 00 

2678          Six  Graduated  Pipettes.     5  %  into  ^. 

Price 2.40 

2679  One  Sand  Glass.     5  minutes. 

Price .75 

We  also  furnish  the  following  different  styles  of  tanks 
and  pipettes: 

2680  Glass  Tank.     Secured  in  box,  with  glass  syphon  and 

air  vent  tube  ;  60  litres. 
Price 15.00 

2681  Glass  Bulb  Pipette.    100%  to  fill  from  the  bottom  with 

spray  arrester  and  draining   saucer,  mounted   upon 
wooden  bracket.     This  pipette  is  recommended  for 
rapid  work. 
Price 7. 00 

2682  Shaking  Table.   For  6  bottles  to  run  by  hand  or  power. 
Price..  50.00 


JOHN  TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


157 


CHLORINE  GENERATORS. 


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No. 

2687     Washing,   Apparatus,  for  chlorine  generator.      Glass,  about   12 
gallons,  with  rubber  stopper,  bent  glass  tubes,  and 
5  feet  of  rubber  tubing  to  connect  with  generator. 
Price  . 


$  7  50 


2688     Sand   Bath,  for  above,  sheet  iron,  water  tight,  for   22-inch   gen- 
erator. 
Price  .  2.50 


2689 


Same,  for  25-inch  generator. 
Price  . 


3.00 


158 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


GENERATORS,  PERCOLATORS. 


'.  o        c 


2690 


2691 


2696 


2697 


2699 


No. 

2690  Generator,  Chlorine.     Test  size,  small,  for  experimental  test  of  20 

or  30  pounds  of  the  ore.     The  generator  (a)  contains 
1  quart. 
Price,  complete  as  per  cut $  6 . 00 

NOTE. — For  full  description  of  manner  of  using  above  generators,  see  "Kustell's  Roasting 
of  Gold  and  Silver  Ores,"  among  our  text-book  list.  Also  see  price  of  manganese,  sulphuric 
acid,  etc.,  in  our  list  of  chtnicals. 

2691  Percolators. 

Capacity V*  1  2     Sal- 

Each $   .75  1.00  1.50 

2696  Generator,  Berzelius.     For  gas. 

Capacity    %  %    gal. 

Each $6.00  7.50 

2697  Fresenius',   for  generating  oxygen  and  sulphuret  of 

hydrogen. 
Capacity,  32-ounce $  2 . 50 

2698          Kipp's   Sulphuretted- Hydrogen.     Most  improved  form  for  a 

constant  supply  of  H2S;  generator  provided  with  Geissler's 

stop-cocks,  safety  tubes,  etc.,  complete. 

Capacity %  pt.              1  pt.  1  qt. 

Each $3.50            4.00  5.00 

2699  Kipp-Wartha. 

Capacity,  8-onnce $  5 .00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


159 


GENERATORS, 


2701 


2698 


2700 


2706 


No. 

2700  Generator,  BabOS.     Very  convenient  where  frequent  and  limited 

quantities  of  H2S  is  required.  Made  to  generate  by 
depressing  the  bulb  containing  the  sulphuret  of  iron; 
upward  movement  of  same  stops  generation.  Com- 
plete, mounted  on  improved  stand,  with  rubber 
stoppers,  pinch-cocks  and  delivery  tube. 
Price,  complete $  2 . 75 

2701  Glass,  part  only. 

Each 1.25 

2705  Displacement,  Hahn's,  with  glass  stopper  and  faucet, 

125  %. 
Each 2 . 50 

2706  Displacement,  Robiquet's. 

Capacity,  lower  vessel  .    16  32  oz. 

Each $1.50  2.00 

2707  With  tube  to  connect  upper  and  lower  vessel,  to  stop 

evaporation. 

Capacity 16  32  oz. 

Each $2.00  2.50 


160 


JOHN   TAYLOR   &   CO.,    SAN    FRANCISCO,    CALIF. 


FILTER   PUMPS,  RAPID  FILTER  APPARATUS. 


2715 


2717 


2720 


2725 


2716 


No. 

2715     Pump,          Filtering   Richard's,  for  exhausting  by  water  pressure  to 
facilitate  filtering. 

Size Small,  ^  inch  bore.         Large,  #  inch  bore. 

Each '   $1.50  2.00 


2716 


Same,  Chapman's. 

Size Small. 

Each $1 . 50 


Medium. 
3.00 


Large. 
5.00 


2717    Couplings,  Chapman's. 

Size 

Each . . 


Small. 
$  .50 


Medium. 
.60 


Large. 
.70 


2720    Rapid  Filtering  Apparatus,  Bunsen's,  with  a  1  gallon  bell  jar 

on   ground  glass  plate,  beaker,  8 
ounce  glass  funnel,  rubber  stoppers, 
and     platinum    cone     to    support 
filter  paper. 
Price,  complete $  6 . 00 


2725 


Same,  a  heavy  cone-shaped  bottle, 
funnel,  rubber  stopper,  exhaust 
pump,  and  simple  valves. 

Capacity 4  8  16  oz. 

Each $2.00        2.50        3.00 


2726 


Same,  with  perforated  platinum  ex- 
panding cone  for  funnel. 

Capacity 4  8  16  oz. 

Each $2.65        3.25        4  00 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CAIJF. 


161 


FILTERING   BOTTLES,  ALKALIMETERS, 


2730 


2731 


2735 


2736 


2737 


2738 


2739 


2740 


2741 


2742 


2743 


2744 


2745 


2750 


2752 


162 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CAUF. 


FILTERING  BOTTLES,  ALKALIMETERS, 
REDUCTION    TUBES. 


2754 


2755 


No. 

2730  Bottles,  Filtering,   Bunsen's,  conical,   of  extra   heavy   glass  to 

withstand  pressure. 

Capacity 4          8         16  32  64  128  oz. 

Each $  .20       .25       .30         .40  .80         1.25 

2731        Filtering,  cane  shape,  with  side  tube  for  use  with  filter 

pump. 

Capacity 4  8  16  oz. 

Each $   .30  .40  .50 

2735  Alkalimeter,  Bunsen's $  1 . 50 

2736  Fresenius' .75 

2737  Fresenius'  &  Will's. 50 

2738  Geissler's,  with  ground  joints 1 .50 

2739  ' '  "     with  stop-cock , 2 . 00 

2740  Kipp's,  with  stop-cock 1 . 75 

2741  Mohr's,  with  pinch-cock .75 

2742  "        for  carbonic  acid  determinations 1 .00 

2743  Rohr  beck's,  with  stop-cock 1 . 75 

2744  Schroedter's,  with  stop-cock 2 . 00 

2745  Peffer's, 2.50 

NOTE. For  full  description  of  2745  see  Peffer's  "Beet  Sugar  Analysis,"  see  paragraph  54. 

2750  Marsh's,   for  detecting    arsenic.     Two    bulbs,    tubes 

^6  inch  opening $     .50 

2751  Same,  with  glass  faucet  and  jet    , 1 . 25 

2752  Same,  with  brass  faucet  and  jet,  all  mounted  on  wooden 

support • 2  75 

2753  Condensing  Plate,  porcelain,  for  above .30 

2754  To  Make  Assays  of  Oxide  of  Manganese.    Capacity 

of  flask  3  ounces. 
Price 1  -  25 

2755  Tubes,  reduction,  for  arsenic  test. 

Form  a,  b,  c,  d,  Doz .75 


JOHN  TAYLOR  &   CO.,  SAN   FRANCISCO,  CALIF. 


163 


GAS  REGULATORS,  EUDIOMETERS. 


2765 


2760-1 


2766 


2767 


2770 


No. 

2760  Tubes,  Gas  Regulator.     Temperature  Regulator,  or  Thermostat, 

according  to   Reichert,   almost  {entirely  of  glass.      Will 
regulate  to   ^   of  1  degree.     Being  about  the  size  and 
shape  of  a  thermometer,  it  fits  j^-inch  hole. 
Price. $  3.00 

2761  For  low  temperatures 3 . 50 

2765  Eudiometer.     For  decomposition  of  water  by  electricity.     Separate 

tubes,    graduated  for  collecting    each    gas    and 
measuring  same;  platinum  terminals  at  side  of  jar. 
Price,  mounted 3 . 25 

2766  Tubes,  Glass,  Extra,  for  above,  graduated. 

Capacity 10  15  25% 

Graduated  into #  #„  #0 

Each $   .50  .65  .80 

2767  Bunsen's  form,  with  two  platinum  electrodes. 

Capacity 50        100        250        500  % 

Graduated  into %          j4  1  1 

Each $2.00      2.50      3.00      3.50 

2770  with  2  stop-cocks  and  platinum  electrodes  at  top  for 

determining  the  quality  of  hydrogen  intermingled 
with  chlorine. 
Unmounted $  3 . 50 

2775  Mounted  .  5  00 


164 


JOH-N   TAYLOR   &   CO..  SAN   FRANCISCO,  CALIF. 


2791 


2790 


2780 


2795 


No. 


2780  Eudiometer.     Decomposition  of  Water.     With  carbon  electrodes. 

Unmounted $  4 . 00 

Mounted 5 . 00 

2781  Same.     With  platinum  electrodes. 

Unmounted 4.00 

Mounted 5.00 

2790  Desiccators.     Consisting  of  a  porcelain  acid  dish  with  six  partitions 

and  bell  glass  ground  air  tight  to  heavy  glass  plate. 

Diameter  of  bell  jar 6  8  10  in. 

acid  dish 4  5  6    " 

Each,  complete $3.50         3.75  4.50 

2791  Desiccator  Dishes,  or  acid  dishes,  of  porcelain,  with  partitions. 

Diameter... 4  4^  5  5}£  6  in. 

Each $1.00       1.25         1.25        1.35  1.50 

2795  Scheibler's.     With  knob  top,  ground  air  tight. 

Diameter 4  b%  6^  in. 

Each $1.00       1.40  2.00 

2798  Fresenius' .     Two  jars  ground  together;  with  triangle. 

Diameter 4  5  in. 

Each $1.50  2.00 


JOHN   TAYLOR    &  CO.,    SAN   FRANCISCO,  CALIF. 


165 


DIGESTING  FLASKS,  POTASH   BULBS, 
NITROGEN   BULBS. 


2800 


2801 


2802 


2803 


2804 


2810 


2811 


2815 


2816 


No. 


2800     Digesting  Flasks,  or  flasks  for  fractional  distillation.     Flat  bottom, 
confining  delivery  tube;  2  oz. 


Bach  

$  .30 

9801 

Each  

.30 

9809 

Each  

.30 

9803 

Each  

.30 

9804 

Each  

.30 

2810 

Potash  Bulbs.     Liebig's,  with  5  bulbs. 
Each                                .          .  .        .            

.60 

981  1 

Each  

.65 

2815 

Nitrogen  Bulbs.     Will  &  Varrentrapp's,  with  3  bulbs,  1)4  inch. 
Each  

.40 

981  R 

,     ..                         ~\Tr»11n*»r'c       3     Kntflpi      9     (\T      r"i  ninitxr      TnritVi      fii«nf»1 

and  delivery  tube. 
Each  . 


1.25 


166 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


LENSES,  MAGNIFYING  GLASSES. 


2835 


No. 
2820 


2822 


2825 


2830 


2835 


2836 


Lenses,  Coddington,  very  powerful,  folding,  nickel-plated  frame. 
Diameter .  .  ^A.  1 


Each 


$1.50 


1.75 


n. 


2.35 


With  handle. 
Diameter  ---- 
Bach  .  . 


$1.00 


1 
1.50 


n. 


Glasses,  Magnifying,  in  rubber  case,  folding,  best  quality. 

Glasses 1  2 

Diameter  ....  1^  1^6  and  1^ 

Each $  .60  1  00 

In  aluminum  case,  folding,  best  quality. 

Glasses 1  2 

Diameter  ....  1  ^ 

Each $  .75  1.00 

Reading,  brass  rim,  with  handle. 

Diameter 2  2}^  3  3^  4 

Each $  .75      1  00       1.35       1.75       2.25 

Hard  rubber  rim,  with  handle. 

Diameter  ....  1  %  1  ^  2 

Each $  .65  .75  1.00 


2.00 


%  and  1  in. 
1.25 


2 

1  in. 
1.25 


2.75 


o  in. 
3  50 


n. 


1.25 


JOHN   TAYLOR   &  CO.,  SAN   FRANCISCO,  CALIF. 


167 


BATTERY  SCREENS. 


\\\\\\\\\\\\ 


2850 — Diagonal  slot  punched. 


2851— Slot  cut  or  burred. 


2852— Round  punched. 


2853— Straight  slot  punched. 


No. 

2850     Screens,  Battery,  Russia  Iron,  for  wet  crushing;  needle  slot  screens. 

No.  of  needle 1     2     3    4    5     6     7     8    9    10  11  12 

Openings  equal  to  number 

of  wire  screen  of  mesh..  12  14  16  18  20  25  30  35  40  50  55  60 

Nos 1-8  9  10        11-12 

Price,  per  square  foot $   .60  .70  .75         .80 

Prices  apply  to  all  the  above  styles. 


JOHN  TAYLOR   &  CO.,  SAN   FRANCISCO,  CALIF. 


HEAVY   STEEL  TEMPERED 
WIRE  BATTERY  CLOTH, 


2855 
No. 

2855  Cloth,  Battery,  Heary  Steel  Tempered  Wire.  Our  list  is  carefully 
selected,  embracing  the  desirable  sizes  of  wire  cloth  for  mining 
purposes.  Any  other  sizes  of  mesh  or  wire  can  be  made  to  order; 
all  factory  lists  of  wire  cloth  in  the  United  States  are  the  same, 
the  price  varies  in  each  mesh  according  to  size  of  the  wire.  No 
length  less  than  100  lineal  feet  shall  be  understood  to  be  a  roll. 
The  mesh  in  the  wire  cloth  is  the  distance  from  the  center  to  the 
center  of  the  wire.  This  grade  of  cloth  is  wove  and  kept  in  stock 
18  and  24  inches  wide.  Other  widths  can  be  made  to  order  if 
desired. 


No.  2  Mesh,  made 

4 

2 

4 

2 

4 

4 

1 

4 

4 

4 

4 

5 

4 

5 

4 

6 

-1 

6 

' 

6 

* 

8 

•< 

8 

4 

10 

-1 

10 

* 

10 

•4 

12 

' 

12 

• 

12 

4 

14 

4 

14 

4 

14 

4 

16 

* 

16 

c 

16 

4 

16 

* 

18 

4 

18 

4 

18 

1 

20 

1 

20 

4 

20 

« 

20 

< 

24 

4 

24 

1 

24 

« 

30 

4 

30 

• 

40 

•f 

40 

4 

50 

4 

50 

I 

60 

* 

70 

1 

80 

4 

90 

from  No.    8  Wire,  per  square  foot $ 

10 


12 
12 
14 
16 
13 
15 
14 
16 
18 
16 
18 
20 
18 
20 
22 
19 
21 
23 
20 
22 
24 
22 
24 
26 
28 
23 
24 
26 
24 
26 
27 
28 
26 
27 
29 
28 
29 
81 
32 
34 
35 
36 
38 
40 
42 


.60 
.38 
.27 
.60 
.38 
.27 
.60 
.38 
.60 

38 
.27 

60 
.38 
.27 
.60 
.38 
.27 

60 
.38 
.27 
.60 
.38 
.27 
.60 
.38 
.27 
.17 
.60 
.48 

32 
.62 
.43 
.35 

27 
.65 
.55 
.38 
.66 
.56 
.68 
.57 
.80 
.65 
.85 
.90 
.20 
.45 


JOHN    TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


169> 


No. 

2860  Cloth,  Brass  or  Copper  Wire.  For  battery  screens.  No  length  less  than  100 
lineal  feet  shall  be  understood  to  be  a  roll.  The  mesh,  same  as  in 
steel,  is  the  distance  from  the  center  to  the  center  of  the  wire. 


Jo.    2  M< 
2 
2 
3 
3 
3 
4 
4 
4 
5 
5 
5 
6 
6 
6 
8 
8 
10 
10 
10 
12 
12 
12 
14 
14 
14 
16 
16 
16 
18 
18 
20 
20 
22 
22 
24 
24 
30 
30 
35 
40 
40 
50 
50 
60 
60 
70 
80 
90 
100 

Nos.  2 
Nos.  2 
Other 

:sh,  made  from  IS 
<i 

« 

<  i 

(i 
ii 

i 

ii 

it 
it 

i 
i 

1  1 
1  1 

it 

i 
i 

to  20  inclusive,  ] 
2  to  80  inclusive, 
widths  can  be  mj 

o.  14  Wire,  per  sqi 
15      " 
16      " 
15      " 
16      " 
17      " 
17      " 
18      " 
19      " 
17     « 
18      " 
19      " 
18      " 
19      " 
20      " 
20      " 
22      " 
21      " 
22      " 
23      " 
22      " 
23      " 
24      " 
23      " 
24      " 
25      " 
24      " 
25       ' 
?6       ' 
26       ' 
27 
27       ' 
28       ' 
28 
29 
29 
30       ' 
30       ' 
31 
32       ' 
32 
33 
34       ' 
35      " 
35      " 
36      " 
37      " 
'    38      " 
'    39      "                 * 
1     40      "                 ' 

L9,  24,  36  and  48  in< 
36  and  48  inches  w 
ide  to  order. 

tare  foot  t    85 

60 

50 

85 

60 

50 

6O 

50 

45 

85 

60 

50 

85 

60 

50 

85 

50 

85 

60 

50 

85 

60 

50 

85 

60 

...                                 50 

85 

60 

50- 

60 

50 

60 

50 

60 

50 

60 

50 

65 

55 

55 

75 

55 

85 

65 

88 

.      .  .             70 

80 

1.00 

'              1  25 

1  45 

:hes  wide, 
ide. 

170 


JOHN  TAYLOR  &  CO.,  SAN   FRANCISCO,  CALIF. 


TIN  SCREENS,  RESPIRATORS,  RUBBER 
SCRAPERS,  RETORTS. 


2870 


2880 


2890 


2885 


No. 

2870    Screens,  Tin,  perforated. 

Size 10x14  14x20  in. 

Dozen $2.00  4.00 

1  box,  size  10x14  inches,  contains  225  sheets. 
1     "       "     14x20      "  "         112      " 

No.  0  is  the  equivalent  of  about  No.  35  mesh  brass  wire  cloth. 
(<     j     u  «  <<  ti     24     "           "  " 

<  <      o     «  <<  «  ''14''  "  '' 


2880  Respirators,  Kurd's  patent.  The  most  complete  device  ever 
offered  for  protecting  the  lungs  and  throat  from  dust,  poisonous 
gases  and  all  other  impurities. 

Each 

2885     Scrapers,  Rubber,  of  pure  gum,  for  cleaning  amalgam  plates, 
inches.     Each . . 


$  2.50 

.50 

2890  Retorts,  Iron,  for  mercury  distillation,  etc.;  movable  cover  fastened  by 
screw  clamp  and  milled  smooth,  making  it  absolutely  tight-fitting. 
Capacity...  ^  1  2  4  8  12  16  pts. 

Weight....       3^6^         9          17        33         57          74     Ibs. 
Each $2.00    3.00    4.00     550    8.00     15.00     18.00 


JOHN  TAYLOR   &  CO.,   SAN   FRANCISCO,   CALIF.  171 


RETORTS,  WATER  JACKETS,   BLANKETS, 
AMALGAM  STRAINERS. 


2900 


2895 


2896 


No. 

2895  Retorts,  Iron,  Nevada  or  Oval  Top,  with  pipe.    The  advantage  of  this  retort 

over  the  old  flat  top  pattern  is  that  it  can  be  filled  full  of  amalgam, 
thereby  holding  more  than  the  old  style,  besides  avoiding  all 
danger  of  explosion,  owing  to  the  crown  space  in  the  cover, 
which  allows  for  the  expansion.  They  are  made  extra  heavy, 
well  ground  in  the  joints,  and  are  furnished  with  a  strong  Norway 
clamp,  having  a  wrought  iron  key,  which  can  be  driven  in  or  out 
of  place  by  a  single  stroke  of  a  hammer. 

Capacity 1         2       3        4          5        6        10  pints 

Holds  quicksilver..      12%      25      38      50        63      75      125    Ibs. 

Weight 10        15      18      25        31       44      65 

Each $4.60  5.50  7.00  8.00  9.00  10.50  12.00 

2896  Jackets,  Water,  or  condensers,  for  Flat  Top  or  Nevada  retorts  and 

pipe. 
Price,  from $  2.00  to  3.00 

2898     Blankets,  Sluice.  All-wool,    with  long    nap,    made  specially   for 
catching  gold. 

Per  yard,  60  inches  wide $  3 .00 

30       "         "     1.75 

2900  Strainers,  Amalgam  or  Quicksilver,   of  heavy  duck,   fastened  to 

iron  ring,  with  hood  outside  to  prevent  loss. 

Diameter 6  10  12  in. 

Each $.90  1.25  1.50 

2901         Same,  without  ring. 

Diameter 6  10  12  in. 

Each $  .50  .70  .75 


172 


JOHN  TAYLOR  &  CO.,  SAN   FRANCISCO,    CALIF. 


CHAMOIS  SKINS,  FUNNELS,  SCOOPS, 

BUCKETS. 


2905 


2904 


2906 


2910 


2912 


291S 


No. 
2902 


2903 


2904 


2905 


2906 


2910 


Chamois  Skins,  for  straining  amalgam,  assorted  sizes  and  qualities. 

Each  ...............  ,  ...................  $  .75  to  1.00 

Funnels,  Agate,  for  quicksilver. 

Diameter  ...............  -  ........  .  ...................     4^  in. 

Each  .............................  ..................  $  .40 

Scoops,  Quicksilver  or  Amalgam,  black  iron,  wood  handle. 

Size  ................................................  5x4^  in. 

Per  dozen  ...........................................     9  .  00 


Same,  of  Russia  iron. 

Length 

Width 

Per  dozen 


5 

2^ 
$2.50 


5 

3^ 
3.00 


5  in. 

4*/2    " 
3.50 


2912 


-      Same.     Flaring  form,  wood  handle. 

Length  ..............................................    iy2  in. 

Width  ...............................................      5    " 

Each  .............................  .  ..................  $    .75 

Buckets,  Quicksilver  or  Amalgam,  iron,  porcelain  lined,  with  bale  and 
spout.  These  have  an  Alaska  handle,  where  grasped  by  the 
hand,  not  shown  in  the  cut. 

Capacity  ........     2         3         4          6  8         10         12     qts. 

Price,  per  dozen..  $7.  20  7.80  9.00  13,50  15.60  16.80  18.00 

-       Russia  iron,  heavy   riveted   bottom,    strong    bolts;    6}^ 

inches  wide,  8  inches  deep. 
Each  ..............................................     $  2  .00 


2913  Same.     Spout  strainer   and  guard;  6%    inches   wide,   8 

inches  deep. 
Each..  ...... 


4.00 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO.  CALIF. 


173 


QUICKSILVER  DIPPERS,  LADLES,  MILL 
LAMPS,  WICKS. 


2914 


2915 


2920 


2922 


2921 


No. 
2914 


Buckets,  Amalgam.     Flaring  pattern,  on  3  legs;  8  inches  deep,  9^ 

inches  wide  at  top,  6  inches  wide  at  bottom. 
Each $  4.00 


2915 


2916 


2920 


2921 


2922 


Dippers,  Quicksilver  or  Amalgam.     Agate,  extra  strong,  wood  handles. 

Small  I/arge 

Size 4#x3  5^x3^  in. 

Per  dozen $6.00  9.00 

—       Black  Iron,  heavy  riveted,  seamless,  wood  handle. 
Diameter,  4j^  inches. 
Dozen $15.00 

Ladles,  Iron.     For  melting  zinc,  antimony,  lead,  etc. 

Diameter 3  4  5  6  in. 

Each  .  $  .30         .40  .50  .60 


Bullion.     Forged  from  one  piece  of  charcoal  iron,  8  inches 

in  diameter,  4  inches  deep. 
Per  dozen $36 . 00 


Lamps,  Mine  or  Mill.     Heavy  galvanized  sheet  iron  ;  japanned  ; 
cone  shaped;  neck  tube  2 inches  high,  ^  inch  bore;  holds 
YZ  pint  oil. 
Each . .  .75 


2923     Wicks.     Extra  wicks  for  above  lamps,  round  woven. 
Per  dozen  . 


.50 


174  JOHN   TAYLOR  &   CO.,  SAN   FRANCISCO,  CALIF. 


2929  2931 


No. 

2925    Brooms,  Mill. 

Nos 3  2  1 

Perdozen $4.50          5.00  5.50 


2926     Pails,  Mill.     Oak,  solid  bottom. 

Per  dozen $15 .00 


2927  Sponges,  Mill  or  Sluice. 

Per  pound,  according  to  size  and  quality $  1 .00  to  1 .25 

2928  Brushes,  Sluice  or  Broom.    Strong. 

Per  dozen $  3.50 


2929  For  cleaning  amalgam  plates;  12  inches  long,  with  handle. 

Rows  of  bristles 3  4  5  6 

Each $.45  .50  .60  .80 

2930  Same.     Platers  brush  made  of  Mexican  fibre. 

Size 3x6  3x8  in. 

Perdozen $1.50  3.25 

2931  Steel  wire.      For  cleaning  battery  screens. 

Size 3x6  3x9  in. 

Each $1.50  2.00 

2932        Steel  round. 

Diameter 2^  in. 

Length  of  wires 4^  " 

Per  dozen $  9 . 00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


175 


•GALVANIC    BATTERIES. 


2950 


2952 


No. 

2950     Battery,  Bunsen's,  with  rolled  zincs,  superior  to  cast  ones. 

Size  1  gal. 

Jar 6x8  in. 

Cell,  complete $  3 . 10 

Parts:  Carbon .40 

Carbon  connection,  Platina  and  clamp .75 


Glass  jar 

Porous  cup 

Zinc  and  connections 


.50 

.25 

1.50 


DIRECTIONS — Amalgamate  the  zinc  with  mercury,  and  place  in  jar.  Place  the 
carbon  in  porous  cup,  and  fill  the  porous  cup  with  40  degrees  nitric  acid 
to  within  a  half  inch  of  the  top;  then  place  porous  cell  immediately  within 
the  zinc,  and  fill  the  glass  jar  with  water  to  the  same  height  as  the  fluid  in 
the  porous  cell.  If  greater  energy  is  required  add  sulphuric  acid  to  the  water 
in  the  glass  jar,  but  not  to  a  greater  extent  than  one  part  acid  to  twelve  parts 
of  water.  The  acid  should  be  added  to  the  water  before  setting  up  the  bat- 
tery, and  the  acid  water  allowed  to  cool  before  using. 


2952 


Crowfoot  Gravity. 

Cell,  complete 

Parts:  Copper,  6  inches 

Zinc,  with  hanger  and  connector 
Jar,  6x8  inches 


1.10 
.20 
.50 
.50 


DIRECTIONS — Pour  enough  water  into  the  jar  to  cover  the  zinc,  then  add  32 
ounces  copper  sulphate  in  small  crystals.  To  hasten  the  action  dissolve  2  or 
3  ounces  of  zinc  sulphate  in  as  many  ounces  of  water,  and  gently  pour  it  on 
top  of  the  copper  solution.  Finally  connect  the  two  electrodes  of  the  series 
and  let  them  so  remain  for  a  few  hours,  until  the  separation  of  the  two  solu- 
tions, which  will  be  known  by  the  blue  observed  in  bottom  of  copper 
solution;  this  blue  line  should  be  maintained  midway  between  the  zinc  and 
copper;  when  the  "blue  line"  is  too  low,  drop  in  a  few  crystals  of  copper 
sulphate;  if  it  is  too  high,  connect  the  battery  in  short  circuit  as  before  de- 
scribed until  it  goes  down,  or  draw  out  some  of  the  copper  solution  and  add 
zinc  solution  or  fresh  water.  As  long  as  the  battery  remains  in  action  there 
is  an  increase  in  quantity  of  zinc  sulphate  solution  in  the  upper  part  of  the 
jar. 


176 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


2954 


2956 


2958 
No. 

2954    Battery,  Gravity,  with  amalgamated  zinc. 

Price  per  cell,  complete $  1 . 30 

"      Zinc,  with  screw .75 

11      Jar,  6x8  inches .50 

"      Copper .15 

This  Battery,  with  amalgamated  zinc,  is  the  very  best  gravity  battery,  and  although  the  first 
cost  is  higher,  yet  it  is  the  most  economical.  Same  directions  as  No.  2952. 

2956     Battery,  Grenet.     French  imported. 

Capacity /^  pt-  1  P*-  1  q*-  %  gal- 
Cell,  complete $1.00  1.60  220  3.00 

„           (  Carbons,  each .20  .30  .40           .50 

\Zinc            " 15  .20  .25            .30 

DIRECTIONS. — To  3  pints  of  cold  water  add  5  fluid  ounces  of  sulphuric  acid;  when  this 
becomes  cold  add  6  ounces  (or  as  much  as  the  solution  will  dissolve)  of  finely  pulverized 
bichromate  of  potash.  Mix  it  well. 

2958    Battery,  Disk  Cell,  "Gonda." 

Complete $  1 . 00 

Disk,  porous  only .60 

Jar 25 

Zinc •. 

Sal- Ammoniac.  .  .  10 


JOHN   TAYLOR    &   CO.,    SAN   FRANCISCO,  CALIF. 


177 


BATTERY  JARS,  CELLS,  BINDING    SCREWS 
AND  POSTS.     PROSPECTORS'  KIT. 


2964 


2964 


2966 


No. 

2960     Battery   Jars.     Round,  of  glass,  best  make. 
Width  ...................... 

Height  ..................... 


Each. 


2962 


2964 


2966 


2970 


Cells.     Porous,  round  cups. 

Width 

Height 

Each. . 


$  .35 


.15 


5 

7 
.40 


3 

itf 

.20 


Connections,  Binding  Screws.    Finished. 

Size Single 

Each $   .  10 


Binding  Post. 

Size 

Each . . 


American  pattern. 


Small 
$  ..08 


Medium 
.12 


What  Every  Prospector  Should  Have.  The  following  little  appa- 
ratus or  kit  of  tools  and  chemicals,  will  enable  one  (without 
being  a  chemist)  to  make  a  quick  and  correct  test,  of  gold,  silver 
and  copper  contained  in  any  rock  : 


Hammer,  one  face  flat,  the 
other  wedge-shape  for  split- 
ting rocks 

Iron  Mortar  and  Pestle 

Magnifying  Glass 

Sieve  (No.  100) 

Ore  Measure 

Acid  Measure 

Spirit  I,amp 


12  Test  Tubes 
Test  Tube  Holder 
3  Glass  Funnels 
Package  Filter  Paper 
1-lb.  Bottle  Nitric  Acid,  C.  P. 
1-lb.  Bottle  Ammonia 
1-oz.  Bottle  Chloride  Tin 
1-pint  Bottle  Alcohol 
Small  Box  Salt 


All  the  above  packed  in  small  box,  16  inches  long,  8  inches 
wide,  9  inches  high,  with  hinged  lid,  lock,  and  leather  strap  for 
carrying  ;  weighs  only  15  Ibs. 


6    in. 
8     " 
.50 


3    in. 

7     " 
.25 


Double 
.18 


Large 
.15 


Price,  complete,  with  full  printed  directions $10.00 


178 


JOHN   TAYLOR   &   CO..  SAN   FRANCISCO,  CALIF. 


MINERS'  GOLD  WASHER  OR   ROCKER, 


2972 


No. 

2972  Miners'  Gold  Washer  or  Rocker,  5  feet  long,  21  inches  wide, 
weighs  63  pounds.  The  rocker  rests  and  rides  upon  a  wood 
frame  not  shown  in  cut.  All  well  made  and  painted,  furnished 
with  dipper  and  amalgam  scraper.  There  is  a  canvas  (not 
shown)  stretched  upon  a  frame,  placed  at  an  angle  under  the 
screen  of  the  rocker,  upon  which  the  first  gold  is  collected. 
This  is  removable  for  cleaning. 
Price  $15. 00 


Same,  made  to  take  apart,  packed  for  shipping  for  mule  transpor- 
tation. 
Price  . 


17.50 


2973  Sluice  Box,  with  riffles,  for  above,  to  extend  the  washing;  36  inches 
long,  22  inches  wide,  3  inches  deep,  with  No.  16  mesh  brass 
wire  sieve  placed  over  upper  end,  removable  to  throw  out 
coarse  sand;  provided,  alsa,  with  copper  plate  22x18 
inches,  silver  plated  upon  upper  side,  and  with  a  rubber 
amalgam  scraper. 
Price..  $14.00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


179 


ASSAY  OUTFITS. 


No. 

2975 


Assay  Outfit  for  Prospectors. 

for  $125. 


F.  O.  B.  cars  or  steamer,  San  Francisco, 


1  Portable  Button  Balance  and  Weights. 

1  Pulp  Scale  with  assay  ton  Weights  1.  A.  T. 

to  ><o. 

1  10-in.  Iron  Furnace,  No.  1525-2. 
l/6  doz.  Muffles. 
1  pair  Crucible  Tongs. 
1     "     Scorifier      " 
1     "     Cupel 
1  Cupel  Mould. 
4  doz.  Crucibles. 
Y^     "      Crucible  Covers. 
100  Scorifiers. 

1  Iron  Mortar  and  Pestle,  X  gal. 
1  Graduate,  4  oz. 
1  Blowpipe. 
1  pair  Cutting  Pliers. 
1     "     Button 
Yt  doz.  Annealing  Cups. 
Yi.      "       Parting  Flasks   Kennedy. 
1  Alcohol  Lamp. 
1  Nest  Beakers  (4). 
1  Wash  Bottle,  16  oz. 


3  Glass  Funnels,  4  oz. 

100  sheets  Filter  Paper  to  fit. 

1  Brass  Wire  Seive,  No.  60. 

1  Steel  Spatula. 

1  Tripod. 

1  Polished  Steel  Anvil . 

1  H.  S.  Magnet,  best  English. 

1    Ib.  Acid  Nitric,  C.  P. 

1     "      "    Hydrochloric,  C.  P. 

5     ' '   pure  Assay  Litharge. 

10  "   Sodium  Bi-Carbonate. 

10  "   Bone  Ash. 

10   "   Borax. 

1     "  Argols. 

X  oz.  Proof  Silver. 

5  Ib.  Granulated  Lead,  C.  P. 

1   "   Rolled  Lead,  C.  P. 

1  Magnifying  Glass. 

X  gal.  Alcohol. 

1  Button  Brush. 

2  Hammers. 


2976  Assay  Outfit  for  $300.  We  are  frequently  requested  by  mining  com- 
panies to  prepare  a  list  of  apparatus,  chemicals  and  fixtures  for 
the  assayers'  use. 

The  following  will  be  found  to  contain  everything  necessary 
and  useful,  and  nothing  unnecessary.  L/arger  quantities  of  cru- 
cibles, scorifiers,  and  chemicals  can  be  added  as  desired.  We 
have  also  added  a  list  for  the  analyst,  and  for  volumetric  deter- 
mination. 

We  trust  these  new  lists  will  be  found  convenient  for  our 
patrons.  If  an  Oertling,  Troemner  or  other  assay  balance  is  pre- 
ferred to  Becker's,  the  difference  in  cost  can  be  ascertained  by 
referring  to  our  general  Catalogue: 


1.  1   Becker's   No.   5  Assay  Balance  with    3  6. 

glass  feet,  7. 
with  2  camel  hair  pencils, 

"    6  watch  glasses,  IJ4  in.,  8. 

"     1  pair  pincers,  9. 

"     3  riders,  each  2  milligrammes.  10. 

2.  1    set  Becker's  Assay   Weights,  No.  1,  1  11. 

gramme  to  % 0  milligramme.  12. 

3.  1  Becker's  Pulp  Balance,  No.  16,  in  glass  13. 

case  with  sliding  door,  counterpoised.  14. 

4.  1  set  Assay  Ton  Weights,  4  to  }£0.     Grain  15. 

weights  and  riders  instead  of  grammes,  16. 

if  desired,  same  price.  17. 

5.  1  Pulp  Spoon,  Japan  tinned,  double  end. 


1  Pulp  Spoon,  Japan  tinned,  spatula  end. 
1  pair  Glass  Scale  Pans,  2%  in.,  for  pulp 

scales. 

1  Wedge  Wood  Mortar  and  Pestle,  No.  4. 
1  Buck's  Pat.  Amalgam  Mortar,  Q}£  in. 
1  Mortar  Dust  Brush,  1]4  in. 
1  Flat  Camel  Hair  Brush,  1)4  in. 
1  Tin  Sampler,  9x12  in.,  5  troughs. 
1  Rubber  Sample  Sheet,  36x36  in. 
1        "  "  "        18x18  in. 

100  Paper  Sample  Bags,  metal  clasp,  6x4  in, 
1  Taylor  Pat.  Hand  Sampling  Ore  Crusher. 
1  10-inch  Steel  Blade  Spatula. 


180 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


No. 

2976 


Assay  Outfit  for  $300— continued. 


18.  1  Miners'  Wash  Horn,  black  rubber. 

19.  1       "  "       Pan,  Russia  iron, 

20.  1  Wood  Batea,  12  in. 

21.  1  Brass  Wire  Sieve,    No.   40,  8-in.,  wood 

rim. 

22.  1  Brass   Wire   Sieve,  No.    60,  6-in.,  wood 

rim. 

23.  1  Brass  Wire  Sieve,  No.  80,  5-in. 

24.  1  Gold  Dust  Blower,  9x10  in. 

25.  1  6-in.  Horse  Shoe  Magnet. 

26.  1  Muffle  Furnace,  sheet  iron,   brick-lined, 

12  in.  interior  diameter.     No.  1525. 

27.  1  Elbow,  for  furnace. 

28.  5-Joint  Pipe,  for  furnace. 

29.  X  doz-  Bat-  Muffles,  12x6x4  in. 

NOTE— The  following  furnaces,  Nos.  30,  31,  if  de- 
sired in  place  of  Nos.  26,  27,  28  and  29. 

30  1  Special  8-gallon  Tank,  with  1  Gasoline 
or  Coal-oil  burner,  pump,  pressure 
gauge  and  connecting  pipes  complete. 

31.  1  Combination  Muffle  and  Crucible  Fur- 

nace, holding  four  No.  9  Battersea  cru- 
cibles, and  one  10x6x4  Muffle. 

32.  %.  doz.  Muffles,  F.  Bat.,  10x6x4  in. 

33.  1  pair   Buckskin    Assay   Gloves,  one-half 

gauntlet. 

34.  1  pair  Assay  Crucible  Tongs,  32  in. 

35.  1     "        ;<       Cupel  Tongs,  26  in. 

36.  1     "        "        Scorifier  Tongs,  29  in. 

37.  4  doz.      ' '        Crucibles,  No.  9,  Battersea. 

38.  1    "     No.  2  B.  L.  Covers. 

39.  1  Assay  Crucible  Rack  to  hold  10  crucibles 

while  charging. 

40.  4  8-oz.  Glass  Stoppered  Bottles,  engraved 

"Nitric  Acid,  Muriatic  Acid,  Sulphuric 
Acid,  and  Ammonia." 

41.  3  No.  10  Black  Lead  Crucibles  for  bullion. 

42.  1    "    10      "          "       Cover. 

43.  1  pair  No.  10  Clasp  Tongs. 

44.  1     "    Melters'  Duck  Mittens. 

45.  1  Quadruple  Bullion  Mould. 

46.  1    160-oz.    Silver,    300-oz.    Gold,    Bullion 

Mould. 

47.  1  Assay  Pour  Mould   3  holes. 

48.  1  Iron  Rack  for  draining  assay  crucibles. 

49.  1  Scorifier  Tray,  cast  iron,  8x8  in.,  9  holes. 

50.  1  Cupel  Tray,  sheet  iron,  5x7  in . 

51.  100  Scorifiers  Bat.,  2%  in. 

52.  YZ  doz.  Clay  Roasting  Dishes,  4  in. 

53.  2  B.  L.  Roasting  Dishes,  5  in. 

54.  1  Bullion  Chisel,  >£x5^  in. 

55.  1  Iron  Cupel  Mould,  \%  in. 

56.  1  Wood  Mallet  for  mould,  2l/2  in. 

57.  1    doz.   red     Chalk     Pencils,    to    number 

cupels,  etc. 


58. 
59. 
60. 
61. 
62. 
63. 
64. 
65. 
66. 
67. 
68. 
69. 
70. 
71. 
72. 
73. 
74. 
75. 
76. 
77. 
78. 
79. 
80. 
81. 

82. 
83. 
84. 
85. 
86. 
87. 


90. 
91. 
92. 
93. 

94. 
95. 
96. 
97. 

98. 
99. 

100. 
101 
102. 
103. 

104. 
105. 
106. 


1  Lingke  Double  End  Button  Brush,  Yt  in. 

1  Polished  Steel  Anvil,  flat,  3x3  in. 

1  Button  Hammer,  6-oz. 

1  Slag  Hammer,  22-oz. 

1  pair  Flat  Nose  Pliers,  4  in. 

1     "    End  Cutting  Pliers,  5  in. 

1     "    Snip  Shears,  6  in. 

1     "    Flat  Taper  Nose,  Bead  Pliers,  5  in. 

1     "    Scissors,  B.  P.  size. 

1  doz.  Flat  Bottom  Flasks,  2-oz. 

Y^   "     Cone  Ring  Flasks,  2  oz. 

1  pair  Wood  Mattrass  Tongs. 

1  No.  2  Bonney  Vise. 

1  Hand  Vise,  \Y*  in. 

2  pieces,  6x6  in.  Iron  Wire  Gauze,  No.  16. 
l/z  doz.  Gold  Annealing  Cups,  B. 

1  Copper  Water  Bath,  5  in.,  4  ring. 

1  Iron  Sand  Bath,  8x1  in. 

1  Nest,  No.  1-6  Plain  Beakers. 

1  Concave  Beaker  Cover,  3^  in. 

1         "  "  «'       3      in. 

1        "  "  "       2^  in. 

1         "  ".  "      2      in. 

6  assorted  7  to  8  in .  Hollow  Glass  Stirring 

Rods. 

1  16-oz.  Washing  Bottle,  R.  S. 
1  32-oz. 

1  doz.  Test  Tubes,  5x^6  in. 
1  Test  Tube  Brush. 

1  Test  Tube  Rack,  8  holes,  and  drain  pins. 
1  Wood  Test  Tube  Holder. 
1  Nest,  3  Test  Tube  Funnels. 

1  Nest  Nos.    1-9    Porcelain    Evaporating 

Dishes. 

2  Porcelain  Capsules  and  Covers,  No.  7. 
1  Dangler's  Gasoline  Laboratory  Lamp. 
1  Glass  Spirit  Lamp,  4-oz. 

1  Berzelius'  Blowpipe,  with  platinum  tip, 
bored  to  YIO  m.  m. 

1  Coal-oil  Stove  with  two  4-in.  wicks. 

2  Glass  Funnels,  plain,  4  oz. 
2      "  "  "       8oz. 

1  package  S.  &  S.  Filter  Paper, 

1 

>£-lb.    Assorted    Glass    Tubing 

inch  diameter. 
2  feet  Rubber  Tube,  */&  inch. 
2     "        '        "      Y\(>  inch. 
2     "       "         "        X  inch. 
1  Combined  8-ounce  and  250  C.  C.  Cone 

graduate. 

1  Chemical  Thermometer. 
1  Beaume  Acid  Hydrometer. 
1  Iron  Stand,  3  rings. 


ctm. 

24  ctm. 
to    Vf 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


181 


No. 


2976    Assay  Outfit  for  $300— continued. 


107.  1  Twisted  Wire  Tripod. 

108.  1  Wood  Funnel  Support. 

109.  1  Patinum  Crucible,  12  C.  C..,  with  cover. 

110.  1  piece  Platinum  Foil,  1x2  inches,  X°oo 

inch  thick. 

111.  6-inch  Platinum  Wire,  'Xooo  inch. 

112.  1  Pocket  Magnifying  Glass,  2  lenses,  No. 

2825. 

113.  1000  Blank  Assay  Certificates  with  name 

of  assayer. 

114.  1  Chlorine  Generator,  Test  Size,  complete. 

115.  1  Glass  Desiccator,  4  inches. 

116.  1  Iron    Quicksilver    Retort,    flat   top ;    1 

pint,  with  pipe. 

CHEMICALS  AND  FLUXES. 

117.  1  Ib.  Acid,  Acetic,  No.  8. 

118.  1         '•          Muriatic,  C.  P. 

119.  1        "          Sulphuric,  C.  P. 

120.  7         "          Nitric,  C.  P. 

121.  1  qt.  Alcohol,  95°. 

122.  1  Ib.  Ammonium  Hydrate  C.  P.,  26°. 

123.  1  "    Ammonium  Carbonate. 

124.  5  "    Argols,  powdered. 


125. 
126. 
127. 
128. 
129. 
130. 
131. 
132. 
133. 
134. 
135. 
136. 
137. 

138. 
139. 
140. 
141. 
142. 
143. 
144. 
145. 
146. 


25  Ibs.  Bone  Ash,  No.  1. 

2  "    Black  Flux. 
20  "    Borax. 

5  "    Borax  Glass. 

2  "    Charcoal,  powdered. 
YZ   "   Gran.  Copper,  C.  P. 

2  "   Sulphate  Copper. 

1  "   Ether  Sulphuric. 

2  "   Pulverized  Glass. 

10  "    Pure  Assay  Lead,  gran. 
10  "      "         "          "       sheet. 
25  "       "        "       Litharge. 

X-doz.  sheets  Litmus  Paper  each,  red  and 
blue. 

1  Ib.  Quicksilver. 

1  "    Potassium,  Carbonate. 

2  "        "          Cyanide. 
4  "         "          Nitrate. 

1  oz.  Proof  Silver  Foil. 
15  Ibs.  Sodium  Bi-Carbonate. 
10  "     Sodium  Hyposulphite. 
2  "     Brimstone. 
1  gal.  Distilled  Water. 


Total  price  of  above  outfit $300.  Weighs  about  800  pounds  gross. 

2980     Assay  Outfit  for  $230.     For  Analytical  and  Volumetric  Work. 


147.     1  Becker's  No.  7  Analytical  Balance,  with  160. 
agate   knives  and  planes ;   power,  100 

grammes    to    1    milligramme,   with  3  161. 
glass  feet, 

1  pair   balanced  glass   pans,    3   inches  162. 

diameter, 

1  specific  gravity  apparatus,  163. 
1  flat  camel  hair  brush,  1>£  inches  wide, 

1  pair  pincets.  164. 
3  Riders,  each,  12  milligrammes. 

L48.     1  set  Becker's  Fine  Weights,  No.  5,  100  165. 

grammes  to  1  milligramme,  and  riders.  166. 

149.  1  Moisture  scale,  with  two  balanced  brass  167. 

pans  7  inches  diameter  ;  power,  2  kilos.  168. 

150.  1   set    Brass    Weights,    in    wood    block, 

2  kilos  down  to  1  c.  g.  169. 

151.  1  Glass  Mortor  and  pestle,  32-oz. 

152.  1  12-in.  Steel  Blade  Spatula.  170. 

153.  2  16-oz.  Boiling  Flasks,  flat  bottom.  171. 

154.  2  32-oz.       "              "        •«     "  172. 

155.  1  Copper  Drying  Oven,  8  x  10  in.,  on  legs, 

double  walls.  173. 

156.  1  nest,  Nos.  1  to  10.  Plain  Beakers.  174. 

157.  2  Concave  Beaker  Covers,  4  in.  diameter.  175. 

158.  2         "            "             "       5    "          "  176. 

159.  1  32-oz     Heavy    Bulb    Shape     Washing  177. 

Bottle. 


1  Porcelain     Evaporating    Dish,     Royal 

Meissen,  12  in.  diameter. 
1  Flat  Porcelain  Evaporating  Dish,  8K  in. 

diameter. 
1  Glass  Evaporating    Dish,  with  spout, 

8X  i°-  diameter. 
1  Porcelain    Casserole    with  cover    and 

wood  handle,  5  in.  diameter. 

1  16-oz.  2  Neck  Woulf  Bottle,  fitted  with 
tubes. 

2  Precipitating  Glasses  on  Foot,  250  C.  C. 
4  ft.  X  in-  Rubber  Tube. 

1  Glass   Stop-cock,    l/%  in.  bore,    double 

end. 
1  Chemical    Mixing    Bottle,    graduated, 

500  C.  C. 

1  Graduated  Cylinder,  1000  C.  C. 
1        "  "         250 

1  Glass  Stoppered  Burette,  100  C.  C.  ><0 

with  float. 

1  Glass  Stoppered  Burette,  50  C.  C.  >/0 
1  Wood  Support, cork  lined,  for  2 burettes. 
1  Graduated  Bulb  Pipette.  10  C.  C. 
1          "  "  "       50    " 

1          "  "  "       100    " 


182 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


Assay  Outfit  for  $230— continued. 


178.  1  Mohr's  Pipette,  graduated,  5  C.C.  into  Yt-  196.  1 

179.  1       "          "                "      20  C.C.  into  Xo-  197.  1 

180.  1       "           "                "      50  C.C.  into  XQ  .  198.  1 

181.  1  Specific  Gravity    Bottle   with  thermo- 

meter and  tare  weight  in  box,  100  C.  C.  199.  1 

182.  1  Specific  Gravity   Bottle  with  thermo- 

meter and  tare  weight  in  box,  50  C.  C.  200.  1 

Volumetric  Flask,  1  liter,  glass-stop- 

pered. 201.  1 

1  Volumetric        "       %       "            "  202.  1 

pered.  203  1 

1  Chemical  Thermometer,  120°  Cel.,  240°  204.  1 
Fah. 

1  Beaume  Hydrometer  for  light  liquids.  205.  1 

1        "  "  "     heavy     " 

1  Hydrometer  Jar,  on  foot.  206.  1 

1  Retort  Stand,  3  adjustable  rings.  207.  1 

1  Wood  Support  for  3  assorted  funnels. 

1  Glass  Retort,  1  pt.,  stoppered. 

1       "    Receiver,     "            "  208.  1 

1  Liebig's    Condenser,    15    in.    glass, 

mounted.  209.  1 

194.  1  Evolution  Flask,  1  pt.,  fitted  with  rub-  210.  1 

ber  stopper  and  delivery  tubes.  211.  1 

195.  2  Gas  Bottles,  1  qt.  212.  1 


183.     1 

184. 

185. 

186. 
187. 
188. 
189. 
190. 
191. 
192. 
193. 


Mercury  Trough  ;  6  Ibs. 

2-gallon  Rubber  Gas  Bag  with  stop-cock. 

Platinum  (pure  hammered)  Dish,  2^in., 
80  C.  C. 

set  40  (4-oz.  reagent  bottles).    Catalogue 
No.  2615. 

Silver  Dish,  2)4  inches  diameter,  with 
spout. 

Box  Blank  Labels,  gummed,  1x2 Yt  in- 

Dialyser,  1  gallon. 

Carbon  Determination  Apparatus. 
Marsh   Arsenic  Test    Apparatus,  with 
mounting  and  plates. 
Richard's    Filter   Pump  with  connec- 
tions. 

Hot  Filtering  Apparatus,  1  pint. 
Rapid   Filtering   Apparatus,    Yt    pint, 
with  perforated  platinum  cone,  com- 
plete. 

Desiccating  Apparatus,  glass  bell  and 
plate,  and  porcelain  acid  dish,  5  in. 
Digesting  Apparatus. 

Potash  Bulb,  Liebig's. 

Nitrogen  Apparatus. 
Displacement  Apparatus,  1  pint. 


No. 

2982 


Memoranda  of  Outfit  for  Copper  Assays  by  Cyanide  Potassium  Method. 


1  Pulp  Balance. 

1  set  Gramme  Weights,  50-gramme  to  1  milli- 

gramme. 

2  pair  Pincets . 
2  Spatulas. 

1  >£-gal.  Iron  Mortar. 

1  80-mesh  Sieve. 

1    doz.  Copper  Flasks. 

>£     "    3)^-in.  Funnels,  Bunsen's, 

Yt     "    Sand  Baths. 

1  10  c.  c.  Cylinder. 

4  10  c.  c.  Pipettes. 

1  8-oz.  Graduate. 

Yz  doz.  8-oz   Beakers. 

Yt  doz.  packages  Gray  Filter  Paper,  7-in. 

^     "          "        S.&S.     "          "          18^  c.  m. 

X  doz.  12-oz.  Beakers. 

1  Dangler  Blast  Lamp,  gasoline. 

1  8-oz.  Alcohol  Lamp,  glass. 
Y^  Ib.  Glass  Rods  and  Tubing. 

2  Burettes,  50  c.  c.,  XQ  glass  stop-cock. 

1  Retort  Stand,  3-ring. 

2  Funnel  Stands,  for  4  funnels. 


1  Sampler  and  Scoop . 
1  Buckboard  and  Muller. 
1  Color  Plate,  porcelain . 

1  H2S  Apparatus,  small. 

2  Empty  Bottles. 

6  ft.  Rubber  Tube,  X-iu- 

3  Pinch  Cocks. 

1  box  Labels,  blank. 

1  book  Labels,  chemical. 

2  books  Litmus  Paper. 

Yt  doz.  Capsules,  No.  3   and  Covers. 
%  gallon  Sulphuric  Acid,  com'l. 
Yz       "      Muriatic  Acid,  com'l. 
Yt       "      Nitric  Acid,  com'l. 

7  "      Nitric  Acid,  C.  P. 

5  Ibs.  Sheet  Zinc,  cut  in  strips,  com'l. 

8  "    Ammonium,  C.  P.,  26°. 

1    "     Potassium  Cyanide,  98$— 99$. 

6  sheets  Copper  Foil,  C.  P. 
Yt  gallon  Alcohol,  95$. 

1         "      Distilled  Water. 
1  Ib.  Zinc,  granulated,  C.  P. 


Price,  complete $80 •  00 

Battery  outfits  for  copper  analysis  can  be  furnished  as  desired. 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CAUF. 


183 


BLOWPIPE  APPARATUS. 


According  to  Prof.  Plattner,  for  Qualitative  and  Quantitative  Blowpipe  Analysis, 


No. 


1     Anvil,  Small,  best  polished  steel,  2#xl  %*% $     .50 


3  Balance,  Plattner's,  for  blowpipe  analysis;  especially  arranged  for 
traveling,  sensible  to  1-5  milligramme,  portable  in  polished 
wooden  box,  best  German  make,  complete,  with  set  of 
weights  1  gramme  to  1  milligramme 25 . 00 


5  Becker's  No.  2.     In  French  polished  glass  case,  9  in.  long 

9|^  in.  high  and  3  in.  deep,  sliding  frame  counterpoised; 
packed  in  a  light  box,  with  strap  for  carrying,  weighing,  all 
boxed,  4^  Ibs.  Needle  deviates  20  divisions  on  the  scale  for 
1  milligramme.  Takes  a  2  milligramme  rider,  which  reads 
YIO  milligramme.  With  apparatus  for  rider,  set  of  weights, 
1  platinum  gramme  to  */lo  milligramme. 

Price 


75.00 


184 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


No. 


Balance,  Troemner's  latest  improved  portable  assay.  In  a  fine  French 
polished  case  ;  beam  and  neeclle  not  disturbed  when  packed 
up;  case  measures  9j^  in.  long,  9^  in.  high  and  4  in. 
deep  ;  packed  in  a  light  outsi8e  case,  with  strong  leather 
hand  strap  ;  needle  deviates  20  full  divisions  for  1  milli- 
gramme ;  a  full  set  of  weights,  from  1  platinum  gramme  to 
yio  milligramme  included.  Takes  a  6  milligramme  rider, 
which  reads  */0  milligramme. 

Price $65.00 


Palp.    Brass  beams,  horn  pans  suspended  by  silk  cord,  with 
weights  10  grammes  to  1  centigramme. 
Price . . 


11     Beakers,  lipped,  00  to  1 


13     Blowpipe,     brass,  jeweler's  form,  plain 


15 

17 


Same,  with  bulb 

Fletcher's  Special  Chemical,  No.  32.  With  folding 
stand,  adjustable  at  any  height  or  angle.  It  can  be 
used  either  with  the  mouth,  or  the  small  hand  blower 
can  be  attached  and  the  blowing  done  by  the  finger. 
With  this  blowpipe  is  supplied  one  jet  with,  and  one 
without  the  patent  coil,  to  enable  a  larger  variety  of 
flame  to  be  obtained.  The  lamp  or  a  weight  should  be 
placed  on  the  stand  when  in  use. 

Price — Blowpipe,  alone 

Blower  alone,  with  Elastic  Chamber  enclosed  within 
a  net,  and  stop-cock  in  box 

As  illustrated .  . 


2.00 
.30 
.15 
.25 


1.00 

3.00 
4.75 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAIJF. 


185 


23-25 


W!CK    HOLDER    TUfiUEO 
HALF  A  REVOLUTION. 


19-21 


27-29 


No. 

19     Blowpipe,  Plattner's,  brass,  with  movable  platinum  tip   and  hard 

rubber  mouth-piece $  2.00 

21                             Same,  brass,  nickel-plated 2 .25 

23     Blowpipe  Lamp,  Plattner's  nickel-plated,  with  patent  swivel 4.00 

Support  D.  E.  for  platinum   crucible,   porcelain 
evaporating  dish,  etc.,   of  polished  brass  to  fit 

lamp,  extra 1 . 25 

27                                      Fletcher's,  polished  brass .75 

29                                         Same,  brass,  nickel-plated 1 . 00 

31                                       Tin,  for  tallow .30 

33     Burner,  Bunsen's,  with  tip  and  tube  for  blowpiping. .85 

35    Button  Brush  Lingke's  f^  in .50 

37     Capsules,  porcelain  capacity  8  c/c .  .15 

39                         Same,  capacity  15  c/c .20 

41     Carbon  blocks  moulded .30 

43                    Cylinders  moulded  3xl#i  in .20 


186 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


45 


47 


49 


51 


59-61 


63 
No. 

45  Borers,  Charcoal,  four-cornered,  small 

47  square  and  spatula  end 

49  square  end  and  chisel  end,  magnetized 

51  club  shape 

53  Capsules,  Charcoal. 


69 


Diameter. 
Doz.  . 


34 
$  .20 


.25 


.45 
.50 
.50 
.75 


1  in. 
.35 


55 


Same,  %6-in,  3  doz.  in  box $   .20 


57    Crucibles,  Charcoal. 

Diameter 
Doz. . 


K 

$  .25 


.30 


59     Charcoal  Holder,  for  Charcoal  Squares,  with  screw  handle  to  fasten 
the  coals  in  . 


61 
63 

65 

67 
69 

71 
73 


Same,  with  platinum  wire  and  shield. 
Saw,  polished  blade 


Squares  or  Stoves,  of  prepared  powdered  charcoal,  30 
mm.  high,  32  mm.  square,  top  face  recessed  to  receive 
porcelain  clay  crucibles  No.  75,  doz 

Same,  Covers,   14  mm.  thick,  32  mm.  square,  recessed  to 
receive  clay  capsule  No.  77,  doz 

Cakes  or  Sticks,  natural,  hard  wood;  willow,  fine  grain, 
size  about  4x1x1  inches,  doz 

Pressed,  size  80x20x10,  mm.,  doz 

"     80x20x20       " 


1  in 
.40 


51.75 

2.25 

.50 

1.00 
.60 

.50 
.50 

.75 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


187 


79        81 


83 


89 


99 


101-3 


105 

No. 

75    Crucibles,  Clay,  dozen $     .30 

77    Capsules,       "        "      25 

79     Carriers,  or  cases  for  crucibles,  capsules  and  stoves,  made  of  japanned 
tin,  with  pull  off  cover. 

For 6  12,  charcoal  crucibles. 

Each $  .25         .30 

For 6  12,  charcoal   capsules. 

Each  $  .25         .30 

For  charcoal  stoves,  with  covers. 

For 3  6,  coal  stoves. 

Each $  .35         .40 

85                      For  12,  clay  crucibles... $     .25 

87                      For  12,  clay  capsules .25 

89  Metal  bottle  for  carrying  oils,  tight  screw  cap  5^  inches 

long,  1  yz  inches  in  diameter 1 . 25 

93     Cylinders,  Clay,  or  holders,  for  charcoal  crucibles  and  capsules,  each  .  25 

95               Charcoal .25 

97                —       For  charcoal  capsules,  to  examine  sublimates .50 

99            Prismatic  form,  with  cavity  at  one  end  and  one  side .35 

101     Color  Test  Plates,  porcelain,  3^x4^  inches,  12  depressions s  .  65 

103                                             "          5x6  inches,  12  depressions  .85 

105    Cobalt  Plates,  blue  glass .10 


188 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAIJF. 


109 


119 


111-13 


125 


123 


127 


No. 

107    Coal  Chisels $     .25 

109     Cupel  Holder,  with  two  cupels  and  one  mould 1 . 50 

111                                 Moulds,  ^-inch  brass 1 . 75 

113                                       "       ^-inch  iron .75 

115     Dishes,  porcelain,  3  in  a  set 40 

117     Dropping,  or  Cobalt  Bottles,  glass  stoppered,  Schuster's,  2-ounce.  .25 

119    Dropping  Tubes .05 

121     Files,  round  and  triangular,  with  handle .20 

123     Forceps,  polished  nickel,  Raynor'sform,  platinum  pointed,  5^£  inches  2 . 25 

125     Cylinder,  Wood,  upon  which  to  form  soda  paper  cornets .15 

127     Filter  Paper.     See  Catalogue,  page  102. 

129     Fuel,  Alcohol,  per  pint .50 

-  Olive  Oil,     "        , 90 

-Nut  Oil,        "        30 

Paraffine,  per  Ib .25 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,   CALIF. 


189 


133 


143 


\J 

141 


-o— 


149 


151 
No. 

131     Funnels,  glass,  per  nest  of  3 $     .20 

133  Supports,  2  brass  rings,  adjustable  vertically  and  sideways, 

wood  base. 

Each .90 

135     Hammers,  Plattner's,  wire  handle •  .75 

137                                 "          wood     "       '.  .60 

139     Holder,  for  chimney  and  funnel 1 . 50 

141                      Cupels,  brass  cups,  held  by  twisted  wire  in  handle .30 

143                                     upright  form .30 

145  for  platinum  wire,  hollow  handle,  milled  screw,  clamping 

point,  etc .90 

147                      with  six  platinum  wires 1 . 75 

149                      with  sliding  ring  and  flat  jaw  ;  will  hold  wire  or  sheet ....  .35 

151 steel,  wood  handle,  for  charcoal  cakes .35 

153     Knife,  for  cutting  cork .25 


190 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


159 


No. 

157     Magnets,  horseshoe,  3  inch $     .25 

159     Magnifying  Glass ' 1.00 

161     Magnet,  straight,  with  chisel  end .40 

163     Mattrasses,  extra  hard  Bohemian  glass,  with  bulb,  dozen .75 

165  '  holders 40 

167     Mixing  Capsules,  brass,  nickel-plated .40 

169                                        horn .25 

171     Mortars,  agate,  with  pestles,  for  grinding  small  specimens  of  ore. 

Diameter...      \%          22^          33^          4        4^         5in. 
Each ,$1.50     2.00     2.75     4.00     5.50    7-50    9.00     12.00 

173         Diamond,  Plattner's,  of  hard  polished  steel,  with  dust- tight 

ring  and  base  piece. 

Small $  4  00 

Large 6 .00 

175  —       L/eed's,  without  ring,  bottom  part  also  used  for  small  anvil.         2.00 

177  Combined  Crushing  and  Cupel  Mould;  steel  cylinder  1^ 
inches  diameter  ;  one  end  flat  and  hardened  for  crushing 
ore  specimens  ;  to  be  laid  upon  any  flat  anvil ;  the  other 
end  formed  for  making  \%  inch  cupels  by  reversing  it  in 
the  ring  ;  brass  cap  to  fit  each  end  to  strike  against 4 . 50 

179  Diamond  or  Crushing  ;  1  inch  diameter  ;  plunger  and  ring 

only  ;  to  use  upon  any  anvil 4 . 00 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


191 


185 


189 


195 


191 


No. 
181 


183 
185 

187 
189 

191 
193 
195 


Moulds,  for  making  pressed  coal  stoves  and  covers,  with  two  pestles 
and  extra  bottom  piece,  complete 

for  making  charcoal  cakes,  with  extra  bottom  piece  for  two 
sizes,  either  80x20x10  or  80x20x20  mm.  . 


hard  wood,  for  making  charcoal  capsules,  improved  form, 
with  self-centering  pestle 

for  making  charcoal  crucibles 


polished  brass,  in   sections  to  take  apart  for  making   clay 
crucibles. . 


for  clay  capsules  made  of  boxwood  . 
for  clay  crucibles,  made  of  boxwood 


Pipette,  glass  bulb,  150  mm  long, 


$  5.00 
3.00 

.75 
.85 

4.50 
.75 

1.25 
.15 


192 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


50 

49 

48 

47 

46 

45  i 

44 

43 

42 

41 

40 

39 

38 

:i7 

36 

35 

34 

33 

32 

31 

30  | 

29 

28  j 

27 

26 

25 

23 

22 

21 

£0 

19 

18 

•17 

16 

15 1 

14| 

13 

12 

11 

10 

9 

8 

7 

6 


3.48;,' 
3.27 
3.07 
2.89 
2.70 
2.53 
2.37 
2.21 
2.0C 
1.91 
I  1.78 
1.C5 

1.41 

1.29 
!l.!9 
j  1.09 

1.00 

0.91 

0.82 

0.75 

0.67 

0.61 

0.54 

0.48 

0.43 

0.38 

0.33  ft 

0.29  W 

0.25  R 

0.22 

0.19 

0.1C 

0.13 

0.11 

0.09 

0.07 

O.OC 

0.04 

0.03 

0.027 

0.020 

o.ou 
o.ooo 

o.ooe 

0.003 
j!  0.0017 
i  0.0007 

O.OC02 

;  0.00002 


219 


No. 

197     Pliers,  flat  nose,  5-inch $     .50 

199          —       flat  taper  nose,  5-inch .60 

201       for  assay  buttons,  5-inch .60 

203  Platinum  Foil            1 

205  Wire 

207  Tips 

209        Crucibles  }  Prices  on  application. 

211  Dishes 

213  Spoons 

215  Spatulas    j 

217  Paper,  glazed,  for  mixing  and  sampling  powdered 
ores ;  in  sheets  colored  bronze,  blue,  black  or 
white  ;  size  20x24  inches  ;  per  quire .' .  $  .50 

219  Harkort's  Ivory  Scale,  for  measuring  B.  P.  but- 
tons to  take  the  place  of  a  balance 3 .00 

DIRECTIONS — Treat  with  the  B.  P.  one  assay  centner  (equals 
100  M.  G.)  of  the  powdered  silver  ore.  If  the  resulting  button 
measures  50  upon  the  scale,  that  is,  just  fits  between  the  diverg- 
ing lines  at  50,  then  the  silver  is  .034%00  percent  of  the  100  M.  G. 
of  ore  by  weight. 

In  1  ton  of  2000  Ibs.  average  there  are  29. 1666  Troy  oz.  .0348 
per  cent  of  29.1666  oz.  equals  1.01499  oz.  of  pure  silver  to  the 
ton.  At  $1.2929  per  oz.,  equals  $1312.26  per  ton,  the  value  of 
the  sample  assayed.  If  a  button  measures  25  on  the  scale,  the 
value  per  ton  will  be  $162.15. 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


193 


223 


225 


ffl 


229 


233 


227 


No. 

221     Scale  of  Hardness,  consisting  of  nine  specimens  in  large  pieces,  as  follows: 

No.  1.     Talc  No.  2.  Gypsum 

"    3.     Calcium  "    4.  Fluoride 

"    5.     Phosphate  lime  "    6.  Alumina 

"    7.     Quartz  "    8.  Topaz 

No.     9.  Corrundum. 

Each  lot  of  specimens  in  recess  in  a  polished  box  6^x  4^x1  ^  inches 

with  a  file,  chisel  and  streak  plate  ;    complete $  5.00 

223     Scissors,  blowpipe .40 

225     Spatulas,  double  end,  steel,  4  inches  long .25 

227  wood  handle,  blade  3  inches  long .25 

229     Spoon,  Ivory,  3}^  inches,  each .30 

231     Shears  for  cutting  metal .75 

233  Sieves,  nest  of  three,  brass,  tin  frame,  3  inches  in  diameter,  with 
cup  at  bottom.  Nos.  30,  50,  100,  or  any  three  numbers  desired, 
per  set 1 . 50 

235    Silver  Foil,  Proof  Silver,  per  oz 1 .60 

237     Soda  Paper,  40  sheets  in  box .25 

239                            sheets  10x5  in -05 

241     Stirrers,  glass,  dozen .50 

243     Streak  Plates,  of  porous  porcelain,  for  mineralogists,  Royal  Berlin.  . 
I^x2?4  in.       2^x3^  in.       3x4  in.       3^x5^  in. 
$   .25  .30  .35  .45 

245     Test   Lead   Measure  graduated  into   5,  10,    15   and  20,  blowpipe 

centners .  .  •  35 


194 


JOHN  TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


269 


247 


265-7 


249 


253-5 


6 
a      to* 


263 


\ 


No. 

247  Test  Lead  Sieve - $  .30 

249  Test  Tubes,  per  dozen 25 

251  holder 15 

253  Support,  4  holes  and  drain  pins .25 

255  Same,  8  holes  and  drain  pins .50 

257     Touch-stones,  black Small,  $  .50;  medium,  $   .75;  large,  1 .00 

259                               White "           .50          "             .75  1.00 

261  Tubes,  hard  glass,  open  at  both  ends,  per  dozen .50 

263       for  arsenic  reduction .10 

265  Wash  Bottle,  fitted  with  pure  gum  stopper  and  tubes,  4  ounce 

267  Same,  8  ounce .55 

269  Watch  Glasses,  2-inch,  dozen 25 

271  Clips .20 

273  Wicks,  for  lamps,  each 10 

275  Test  Needles  of  Gold,  9  needles  fastened  to  a  ring,  numbered,  and 
containing  gold  upon  their  points  of  4,  6,  8,  10,  12,  14,  16,  18 

and  20  karats  fine 3.00 

277  Trays,  sheet  iron,  for  carrying  cupels  or  capsules,  12  depressions  ...  .65 


JOHN   TAYLOR  &   CO.,  SAN   FRANCISCO,  CALIF.  195 


HARDING'S  PORTABLE    BLOWPIPE  OUTFIT. 


Pipette. 

Pliers. 

Wood  Former  for  Cupels. 

Clay  Cover  for  Scorifier. 

Annealing  Cups.' 

Phosphoric  Acid. 

Granulated  Lead. 

Borax  Glass. 

C.  P.  Nitric  Acid. 

Paraffine. 

Alcohol. 

Bone  Ash. 

Proof  Silver. 


No. 

279     Portable    Blowpipe    Outfit,   Harding's,   for    50    assays,  each    2 
grammes,  packed  in  box.  25x9  >£x7^  inches,  hinged  lid,  with 
straps  for  carrying,  weighs  38  pounds. 
Price,  complete,  with  directions $40.00 

The  following  articles  are  included  in  the  above  blowpipe  outfit : 
Mortar  and  Anvil  combined. 
Hammer  and  Pestle  combined. 
Tin  Frame  Sieve,  100  mesh. 
Horseshoe  Magnet. 

Button  Balance  and  Weights,  1  grm.  to  1  mm. 
Granulated  Lead  Measure. 

"     Spoon. 

Roasting  Furnace,  Asbestos  Lined  (Fig.  2). 
Fifty-five  Scorifiers. 
Paraffine  Lamp. 
Blowpipe,  adjustable  mounting,  rubber  bellows, 

with  platinum  tip,  g/TO  mm.  bore. 
Spirit  Lamp. 
Forceps. 

FIRST,  FUSION — Weigh  two  grammes  of  pulp  or  well  mixed  ore,  and  mix  with  it  eight 
grammes  of  pure  granulated  lead  in  the  scorifier,  then  cover  the  mixture  with  eight  grammes 
more  of  the  lead,  then  by  means  of  the  pipette  add,  drop  by  drop,  concentrated  phosphoric  acid 
until  the  mixture  is  moist.  The  object  of  this  is  to  cement  the  pulp  into  a  compact  mass  to  pre- 
vent its  being  blown  away  by  the  blast. 

Place  the  scorifier  (D]  with  its  charge  into  the  furnace,  as  shown  in  Fig.  1,  and  let  it  rest 
quite  level  upon  its  asbestos  bed  with  loose  asbestos  around  the  sides  of  the  scorifier,  even  with 
the  top,  as  at  E.  Now  blow  a  smoky  flame  upon  the  surface  of  the  assay  so  expel  moisture,  then 
add  to  the  assay  ten  or  twenty  per  cent  of  borax  glass  as  the  ore  may  require. 

The  cover  (A)  is  now  placed  upon  the  scorifier  as  shown,  but  care  must  be  taken  that  the 
openings  (A  and  ff)  are  just  large  enough  to  let  the  flame  in  at  A  and  the  gas  escape  at  the  open- 
ing B. 

The  most  difficulty  is  experienced  by  beginners  in  obtaining  a  flame  which  is  of  sufficient 
volume  and  intensity  to  bring  the  ore  to  fusion.  The  paraffine  in  the  lamp  (G)  must  first  be 
melted,  and  the  copper  tube,  which  carries  the  wick,  heated  by  means  of  an  alcohol  flame  and 
mouth  blowpipe  before  the  lamp  is  lit.  The  wick  should  be  cut  to  an  angle  of  about  thirty 
degrees.  The  flame  when  burning  freely  should  be  about  five  inches  high. 

Particular  care  must  be  taken  with  the  platinum  blowpipe  tip.  It  is  bored  to  the  width  of 
%0  millimeters,  and  the  hole  is  true  and  in  line  with  the  axis  of  the  cone,  and  it  should  be  pre- 
served from  injury.  If  this  is  not  the  case  the  flame  will  scatter  and  buzz,  in  which  case  it  is  im- 
possible to  obtain  a  fusion.  The  blowpipe  flame  must  be  perfectly  smooth  and  silent,  when  the 
furnace,  lamp  and  blowpipe  are  in  the  position  shown  in  Fig.  1.  The  bellows  are  operated  so  as 
to  produce  a  flame  which  is  slightly  yellow  at  A,  but  nearly  blue  at  C.  This  flame  is  kept  up 
until  the  fusion  is  completed,  then  the  tip  is  moved  a  little  in  the  direction  of  the  furnace,  which 
will  shorten  the  flame  so  that  the  point  will  barely  strike  the  surface  of  the  molten  lead.  Care 
must,  however,  be  taken  that  the  temperature  of  the  furnace  does  not  drop  to  the  extent  as  to  chill 
the  slag.  The  blast  is  kept  up  until  the  lead  is  oxidized  to  such  an  extent  as  to  be  nearly  covered 
with  slag.  The  scorifier  is  then  removed  from  the  furnace  and  allowed  to  cool. 

SECOND,  CUPELLING — The  lead  button  is  prepared  in  the  ordinary  way  for  cupellation. 

The  cupel  is  made  by  taking  a  new  scorifier  and  filling  it  with  dry  bone  ash  and  pressing 
down  the  surface  as  hard  as  you  can,  and  smooth,  with  a  depression  in  the  center  about  $5  of  an 
inch  in  diameter  and  /fe  of  an  inch  deep.  A  wood  former  is  provided  for  this  operation. 

The  cupel,  prepared  in  this  way,  is  placed  within  the  furnace  (without  a  cover),  as  Fig.  2, 
and  heated  with  the  blowpipe  flame  until  all  the  moisture  is  expelled.  Then  the  lead  button  is 
placed  in  the  cavity  for  cupellation. 

The  flame  is  held  directly  on  the  lead  until  the  litharge  begins  to  form.  After  this  it  is 
necessary  to  keep  the  point  of  the  blue  flame  at  one  side  of  the  molten  lead.  The  object  of  this 
is  to  keep  the  bone  ash  at  a  sufficiently  high  temperature  to  absorb  the  litharge  as  fast  as  it  is 
formed.  Close  attention  must  be  paid  to  this  part  of  the  operation. 

The  flame  should  be  directed  to  any  point  where  litharge  is  inclined  to  accumulate,  other- 
wise the  operation  is  as  the  ordinary  cupellation  in  the  muffle  furnace. 


196 


JOHN  TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


279— Figure  2 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


197 


281-3-5 


No. 

281 


BLOWPIPE  APPARATUS  IN  SETS. 

Society  of  Arts  Blowpipe  Apparatus — These  blowpipe  cabinets  are  un- 
equaled  in  cheapness  and  quality,  compactness  and  portability,  and  in 
arrangement  of  apparatus. 


Set  A,  in  mahogany 

Blowpipe. 

Spirit  Lamp. 

Grease  Lamp. 

Hammer. 

Anvil. 

Pestle  and  Guard. 

Platinum  Forceps. 

Brass  Forceps. 

Lamp  Tweezers. 

Test  Tube  Holder. 

Chisel. 


box,  contains 

Magnet. 
File. 
Scissors. 
Cupel  Striker. 
Bone  Spatula. 
Platinum  Wire. 
Platinum  Foil. 
Tin  Foil. 
Magnesium. 

Pastille  and  Cupel 

Pastilles. 


Boiling  Dish. 
Open  Tubes. 
Closed  Tubes. 
Glass  Rod. 
Blue  Glass. 
Litmus  Paper. 
Turn  eric  Paper. 
Brazil  Wood  Paper. 
Soda  Paper. 
Sodium  Carbonate. 
Microcosmic  Salt. 


Borax. 
Bone  Ash. 
Fluor  Spar. 
Assay  Lead. 
Cobalt. 
Nitrate. 

Potassium  Bi-sulphate. 
Copper  Oxide. 
Silver. 

Chloride  and  Potassium 
Iodide  of  Sulphur. 


Price $14.00 


283     Blowpipe  Apparatus,  Set  B,  in  polished  mahogany  box,  with  initial 

plate,  contains,  in  addition  to  the  above,  plati- 
num tip  to  blowpipe,  agate  mortar  and  pestle, 
and  gold  bead 17 . 50 


285 


Set  C,  contains  same  apparatus  as  B,  in 
mahogany  box,  with  the  addition  of  48  care- 
fully selected  test  minerals  in  tubes  arranged 
in  a  drawer.  These  minerals  afford  good 
examples  in  practice  for  both  elementary  and 
advanced  students  .  . 


20.00 


198 


JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


287 


No. 

287 


Fine  Blowpipe  Set  for  both  qualitative  and  quantitative  analysis.  Made  by 
C.  Osterland,  Freiberg,  Germany.  All  contained  in  polished  mahogany  box, 
13^x12^x4^2  in.,  with  brass  grip  handle  at  one  end.  Enclosed  in  stout 
leather  case  with  straps  ;  weighs  complete,  221bs.  Contains  the  following 
implements,  all  of  finest  construction,  brass  and  nickel  finish,  packed  in  velvet 
lined  recesses,  in  trays  and  in  tin  boxes: 


1.  Balance — 8)4  in.  nickel-plated  beam.   New  26. 

arrangement  to  arrest  the  pans.     Beam  27. 

support  always  vertical.     Sensible  to  /^0  28. 

M.  G.,  with  two  pairs  metal   removable  29. 

pans  and  vial  to  take  the  specific  gravity  30. 
of  ores. 

2.  Folding  Glass  Case  for  No.  1.  31. 

3.  Set  Weights  of  sheet  platinum  and  alumi-  32. 

num.  1000  milligrammes  to  yt0  M.  G.  33. 

4.  Pair  Horn  Pans,  balanced.  34. 

5.  Harkort's    Ivory    Scales    for     measuring  35. 

cupel  beads.  36. 

6.  Pair  Ivory  Pointed  Pincets.  37. 

7.  '      Platinum  Pointed  Pincets.  38. 

8.  '      Brass  Pincets. 

9.  '      Steel        "  38a, 

10.  '      Flat  Nose  Flyers.  39. 

11.  '      Polished  Steel  Scissors,  with  file  back. 

12.  Magnifying  Glass,   2  lenses,   black   horn  40. 

frame.  41. 

13.  Steel  Chisel  and  Magnet  combined.  42. 

14.  "      Hammer,  wood  handle.  43. 

15.  Combined  Steel  Anvil  and  Diamond  Mor-  44. 

tar.  45. 

16.  Agate  Mortar,  2  in.,  and  pestle. 

17.  Ivory  Spoon.  46. 

18.  Steel  Spatula,  double  end. 

19.  Horn  Mixing  Capsule.  47. 

20.  Brass         "  48. 

21.  Camel  Hair  Pencil  Brush.  49. 

22.  Box  Soda  Paper,  cut  to  size.  50. 
28.     Boxwood  Cylinder  for  No.  22.  51. 

24.  Granulated  Lead  Measure,  graduated  into  52. 

5,  10,  15,  20  B.  P.  centners. 

25.  Square  Coals,  with  covers. 


Coal  Crucibles. 

"     Capsules  or  Dishes. 
Porcelain  Clay  Crucibles. 
"  "       Capsules. 

Square   Coal  Holder,    with  platinum  wire 

and  guard  plate. 
Clay  Holder  for  Nos.  26  and  27. 
Coal  Borer,  spatula  end. 
"       for  No.  23. 
"      large,  for  No.  28. 

Plattner's  B.  P.  Lamp  with  folding  stand. 
Metal  Lamp  for  Alcohol. 
Supoort  for  Crucibles  to  fit  stand  No.  35. 
Blowpipe,  Berzelius  form,  trumpet  mouth 

and  platinum  tip,  bored  to  yio  M.  M. 
Extra  Platinum  Tip,  beared  to %o  M.  M. 
Cupel  Mould,  with  stamp  and  stand,  after 

Plattner. 
Platinum  Sheet. 
Magnesium  Ribbon. 
Silver  Strips. 
Zinc      " 

Test  Papers,  blue  and  red  Litmus. 
Platinum  Wire  Holder,  with  hollow  han- 
dle and  wires. 
Platinum  Spoon,  short  handle,  to  be  held 

by  No.  7. 

Button  Brush,  double  end. 
Open  Tubes,  hard  glass. 
Closed  Tubes,  "        " 
B.  P.  Mattrasses,  hard  glass. 
Set  4  Glazed  Porcelain  Capsules. 
Two        "  " 

45  M.  M.  Wide. 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


199 


No.  287  Continued. 

Also  the  following  Reagents  in  glass-stoppered  bottles,  in  turned  polished  wood 
boxes,  with  pull-off  cover. 


A — Arsenic. 

B— Borax. 

C— Soda. 

D— Salt  Phosphor. 

E— Nitre. 

F — Muriate  Ammonia. 

G — Plattner's  Flux. 

H— Chloride  Soda. 


I — Oxide  Copper. 
J— Test  Lead. 
K— Starch  Flour. 
L — Acid  Oxalic. 
M— Sifted  Bone  Ash. 
N— Washed  " 
O— Iron. 


P— Bi-Sulphate  Potash. 
Q— Nitrate  Cobalt. 
R— Borax  Glass. 
S — Iodide     Potash     and 

Sulphur. 
T — Acid  Boracic. 
U — Potassium  Cyanide. 


Price,  complete , $140.00 


No. 


289     Blowpipe  Apparatus,  as  described  in  "  Brown's  Manual  of  Assaying." 


1  1  Set  (3)  Porcelain  Dishes. 

2  1  Diamond  Steel  Mortar. 

5  1  Pair  Platinum  Pointed  Forceps. 
41     "     Heavy  Tip  Steel  Forceps. 
51"    Steel  Forceps. 

6  1  Steel  Chisel. 

7  1  Charcoal  Borer,  club  shape. 
81"  "       with  spatula. 
9     1  Pair  Scissors. 

10  1  Platinum  Holder,  with  6  wires. 

11  1  Plattner's  Blowpipe  Lamp,  with  swivel. 

12  1  Charcoal  Saw. 

13  1  Mattrass  Holder. 

14  1  Plattner's  Blowpipe,  nickel  plated. 

15  1  Platinum  Tip  for  same. 

16  1  Steel  Hammer,  with  wire  handle. 

Test  Lead. 
Tin. 

Phosphorous  Salt. 
Borax  Powder. 
Borax  Glass. 
Boracic  Acid,  fused . 
Boracic  Acid,  cryst. 
Plattner's  Flux. 
Bismuth  Flux. 


17  1  Set  Moulds  and  Stamps. 

18  1  Pair  Nippers. 

19  1  Double  Lense. 

20  1  Knife. 

21  1  Dropping  Pipette. 

22  1  Camel  Hair  Brush. 

23  6  Mattrasses. 

24  1  Glass  Alcohol  Lamp,  with  metal  top. 

25  1  Chamois  Skin. 

26  6  Glass  Tubes. 

27  Yz  Dozen  Charcoals. 

28  Coal  and  Ash  Trays. 

29  2  Books  Test  Papers. 

30  Frame,  with  18  glass-stoppered  and  labeled 

reagent  bottles,  containing  the  following 
reagents : 

Carbonate  Soda. 

Potash  Oxalate. 

Salt. 

Soda  Nitrate. 

Charcoal. 

Bone  Ash,  sieved. 

Bone  Ash,  washed. 

Copper  Oxide. 

Bisulphate  Potash. 


Price  for  complete  set,  securely  packed  in  neat  wooden  carrying  case.  .     $30.00 


200 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


No. 


291     Diamond  Mineral  Collection,  in  box 

bered  specimens,  averaging  one  inch  in  diameter, 
with  automatic  spring  lock,  as  follows  : 


1.  Native  Sulphur. 

2.  Stibnite. 

3.  Graphite. 

4.  Auriferous  Quartz. 

5.  Argentite. 

6.  Cinnabar. 

7.  Chalcopyrite. 

8.  Cuprite. 

9.  Malachite. 

10.  Azurite. 

11.  Galenite. 

12.  Cerussite. 

13.  Sphalerite. 

14.  Zincite. 

15.  Willemite. 

16.  Calami  ne. 

17.  Cassiterite. 

Price  . 


18.  Pyrite. 

19.  Pyrrhotite. 

20.  Hematite. 

21.  Magnetite. 

22.  Limonite. 

23.  Siderite. 

24.  Pyrolusite. 

25.  Corundum. 

26.  Cryolite. 

27.  Wavellite. 

28.  Fluorite. 

29.  Gypsum. 

30.  Apatite. 

31.  Calcite. 

32.  Dolomite. 

33.  Barite. 

34.  Celestite. 


in.     A  set   of  50   num- 
Polished  hardwood  box 


35.  Rock  Crystal. 

86.  Amethyst. 

37.  Milky  Quartz. 

38.  Chalcedony. 

39.  Agate. 

40.  Jasper. 

41.  Pyroxene. 

42.  Rhodonite. 

43.  Amiphibole. 

44.  Garnet. 

45.  Mica. 

46.  Scapolite. 

47.  Orthoclase. 

48.  Cyanite. 

49.  Talc. 

50.  Serpentine. 


2 . 50 


JOHN   TAYLOR   &   CO.,   SAN   FRANCISCO,    CALIF. 


201 


293  Students'  Complete  Mineral  Collection.  Three  hundred  speci- 
mens, in  six  trays  or  drawers,  with  recesses  for  each,  all  packed  in 
box  12^x8x8^  in.,  illustrating  Dana's  Manual  of  Mineralogy  and 
Petrography.  Antique  oak  cabinet,  polished  and  paneled,  chiffonier 
locks.  The  most  complete  mineral  set  ever  offered.  Any  one  of 
the  six  drawers  can  be  pulled  out  and  laid  before  the  student. 

Price,  with  Dana's  Manual  of  Mineralogy  and  book  of  localities .     $50 . 00 


MINERAL  AND  CHEMICAL  SUBSTANCES 

To  illustrate  the  Important  Re-action  of  Bodies  before  the  Blowpipe. 

295     The  set  of  50,  each  in  bottle,  labeled  and  numbered,  conveniently  packed   in 
box  for  carrying,  in  pocket  7x5x2  inches.     Following  is  the  list : 


1.  Alloy  of  Mercury  and  Tin. 
2.               "  Lead  and  Antimony. 
3.               "       "      "      Bismuth.    , 

26.  Fluor  Spar. 
27.  Feldspar. 
28.  Graphite. 

4.       "        "      "      "       Zinc. 
5.               "  Copper,  Lead  and  Silver. 
6.               "  Tin  and  Copper. 
7.               "  Lead  and  Platinum. 

29.  Galena. 
30.  Hematite. 
31.  Iodide  of  Potassium. 
32.  Mica 

8.               "  Gold,  Silver  and  Copper. 
9.  Alum. 

33.  Molybdic  Acid. 
34.  Oxide  of  Cobalt. 

10.  Anglesite 
11.  Arsenious  Acid. 

35.       "       "  Lead. 
36.  Oxalate  of  Nickel. 

12.  Arseniate  of  Copper. 
13.  Bromide  of  Cadmium. 
14.  Bone  Ashes. 
15.  Chloride  of  Copper. 
16.             "      "  Sodium. 
1  7.  Carbonate  of  Ammonium. 

37.  Pyrolusite. 
38.  Quartz. 
39    Sulphate  of  Baryta. 
40.                     "  Copper. 
41.          "          "  Magnesia. 
42.          "         "  Potassium. 

18.             "         "  Lithium. 
19.  Cuprite. 
20.  Cinnabar. 

43.  Sulphur. 
44.  Sesqui  Oxide  of  Chromium 
45.  Oxide  of  Uranium. 

21.  Calcite. 

46.  Stibnite. 

22.  Chromic  Iron. 

47.  Strontianite. 

23.  Chlorate  of  Potash. 

48.  Steatite. 

24.  Enargite. 
25.  Emery. 

Price  .  . 

49.  Serpentine. 
50.  Ulexite. 

.    £10.00 

By  the  use  of  the  substances,  No.  295,  re-action  of  the  following  elements  and 
compounds  may  be  obtained  : 


Antimony. 

Aluminum. 

Arsenic. 

Ammonium. 

Bismuth. 

Bromine. 

Baryta. 

Boracic  Acid. 

Copper. 

Chlorine. 

Calcium. 

Cobalt. 

Chromium. 

Carbon. 


Cadmium. 

Chloric  Acid. 

Carbonic  Acid. 

Fluorine. 

Gold. 

Iodine. 

Iron. 

Lead. 

Lithium. 

Mercury. 

Molybdenum. 

Manganese. 

Magnesium. 

Nickel. 


Oxygen. 

Phosphoric  Acid. 

Platinum. 

Potassium. 

Silver. 

Sulphur. 

Sulphuric  Acid. 

Strontium. 

Silica. 

Sodium. 

Tin 

Tungstic  Acid. 

Uranium. 

Zinc. 


202  JOHN  TAYLOR  &  CO.,  SAN   FRANCISCO,  CALIF. 


BOOKS 


UPON  ASSAYING,  MINERALOGY,  CHEMISTRY  OF  METALS,  BLOWPIPE,  CHEMICAL 

ANALYSIS,  ETC. 


NOTE — The  apparatus  and  chemicals  described  in  the  following  books  we  keep  on  hand. 
Aaron  (C.  H.) — Part  I,   Assaying  Gold  and  Silver  Ores.     Illustrated $  1.00 

Aaron  (C.  H.) — Part  II  and  III  combined  illustrated  Gold  and  Silver 
Bullion  Assaying,  Melting  Humid  Assay  Process;  also,  lead,  copper, 
tin,  mercury,  zinc,  antimony,  sulphur,  etc.,  concluding  with  an 
appendix  to  Part  I 1 . 75 

Abel  (Frederick  Augustus) — Mining  Accidents  and  their  Prevention,  with 

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JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF.  203 

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204  JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


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JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF.  205 

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Fock  (Andreas)— Introduction  to  Chemical  Crystallography 2.00 

Fownes    (George) — Manual   of  Elementary  Chemistry,  Theoretical   and 

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Furman  (H.  Van  F.) — A  Manual  of  Practical  Assaying.  Determinations 
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206  JOHN   TAYLOR   &   CO,  SAN    FRANCISCO,  CALIF. 


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JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF.  207 


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208  JOHN   TAYLOR   &   CO.,  SAN    FRANCISCO,  CALIF. 


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Richards  (Joseph  W.) — Aluminum.     Its  history,  occurrence,  properties, 

metallury  and  applications,  including  its  alloys 7.50 

Rickard  (T.  A.)— Stamp  Milling  of  Gold  Ores 2.50 

Rickett  (Russell) — Skeleton  Notes  upon  Inorganic  Chemistry .  .75 

Ricketts  (Pierre  de  Peyster)  —Notes  on  Assaying  and  Assaying  Schemes  .         3.00 

Roberts  (Austen  W.  C.) — An  Introduction  to  the  Study  of  Metallurgy. 

Revised  and  enlarged 5 . 00 

Robinson  (Henry) — Hydraulic  Power  and  Hydraulic  Machinery.  A  work 
of  great  usefulness  to  practical  engineers  and  students.  Revised  and 
enlarged  edition 10 . 00 

Roscoe   (Henry    E.) — Lessons  in  Elementary  Chemistry,    Inorganic  and 

Organic 1 . 25 

Roscoe  (H.  E.)  and  Schorlemmer  (C.  R.)— Treatise  on  Chemistry. 
Inorganic  Chemistry  : 

Vol.    I.     Non- Metallic  Elements;  8vo   5.00 

Vol.  II,  Part  1.     Metals;  8vo 3.00 

Vol.  II,  Part  2.     Metals;  8vo 3.00 

Organic  Chemistry  : 

Vol.  Ill,  Part  1.     The  Chemistry  of  Hydrocarbons  and  their  Deriv- 
atives ;  8-vo 5 . 00 

Vol.  Ill,  Part  2;  8vo 5.00 

Vol.  Ill,  Part  3 3.00 

Vol.  Ill,  Part  4 3.00 

Vol.  Ill,  Part5 3.00 

Rose  (T.  Kirke) — The  Metallurgy  of  Gold.  Being  one  of  a  series  of 
treatises  on  metallurgy  written  by  associates  of  the  School  of  Mines, 
London,  Eng.  Edited  by  Professor  W.  C.  Roberts  Austin;  illustrated  6.50 

ROSS  (W.  A.) — The  Blowpipe  in  Chemistry,  Mineralogy  and  Geology:  con- 
taining all  known  methods  of  anhydrous  analysis,  many  working 
examples,  and  instructions  for  making  apparatus 2.00 

Rothwell  (Richard  P.)— The  Mineral  Industry.  Its  statistics,  technology 
and  trade  in  the  United  States  and  other  countries  from  the  earliest 
times  to  the  end  of  1898 : 

Vol.  1,1892 5.00 

Same,  Vol.  II,  1893. . .    5.00 

Same,  Vol.  Ill,  1894 5.00 

Same,  Vol.  IV,  1895 5 . 00 

Same,  Vol.  V,  1896 5.00 

Same,  Vol.  VI,  1897 5.00 

Same,  Vol.  VII,  1898 .  .  5 .00 


210  JOHN   TAYLOR   &    CO.,  SAN    FRANCISCO,  CALIF. 


Sadtler  and  Trimble — Pharmaceutical  and  Medical  Chemistry $  5.00 

Schimpf  (Henry  W.)—  Text-book  of  Volumetric  Analysis  with  special 
reference  to  the  volumetric  processes  of  the  Pharmacopoeia  of  the 
United  States 2.50 

Schnabel  (C.)— Handbook  of  Metallurgy,  translated   by    Henry   Louis. 

2  vols 10.00 

Sexton  (A.  Humboldt)—  Text-book  of  Elementary  Metallurgy 2.50 

Shepard  (James  H.) — The  Elements  of  Inorganic  Chemistry,  descriptive 

and  qualitative 1.25 

Slojine  (T.  O'Connor)— The  Arithmetic  of  Electricity.  A  manual  of  elec- 
trical calculations  by  arithmetical  methods,  including  numerous 
rules,  examples  and  tables  in  the  field  of  practical  electrical  engineer- 
ing and  experimenting 1 . 00 

Smith  (Edgar  F.)—  Electro-Chemical  Analysis 1 .00 

Spencer  (Guilford  L.)  — Handbook  for  Chemists  of  Beet  Sugar  Houses 
and  Seed  Culture  Farms,  containing  selected  methods  of  analysis, 
sugar-house  control,  reference  tables,  etc 3  00 

Spencer  (Guilford  L-) — A  Handbook  for  Sugar  Manufacturers  and  their 
Chemists,  containing  practical  instructions  in  sugar-house  control. 
The  diffusion  process,  selected  methods  of  analysis,  reference  table, 
etc 2.00 

Stillman  (Thos.   B.) — Engineering  Chemistry  ;  a  manual  for  the  use  of 

chemists  in  the  examination  of  engineering  materials 4 . 50 

Stretch  (R.  H.)  — Prospecting,  Locating  and  Valuing  Mines 2 .50 

Sutton  (Francis) — A  systematic  Handbook  for  the  Quantitative  Estimation 
of  Chemical  Substance  by  measure,  applied  to  liquid^,  solids  and 
gases;  illustrated 5 . 00 

Tayler  (A.  J.  Wallis)  — Sugar  Machinery ;  a  descriptive  treatise  devoted 
to  the  machinery  and  apparatus  used  in  the  manufacture  of  cane  and 
sugar  beet 

Thornton   (Arthur)    and    Pearson    (Marchant) — Notes    on   Volumetric 

Analysis 1  00 

Thorpe  (T.  E.) — Inorganic  Chemistry.    Vol.  I.     Non-metals 1 .25 

Thorpe  (T.  E.) — Inorganic  Chemistry .     Vol.  II.     Metals 1 . 25 

Thorpe  (T.  E.)— Quantitative  Chemical  Analysis 1 . 50 

Thorpe — (T.   E.)   aud    Muir   (M.    M.    Pattison)   Manual   of  Qualitative 

Analysis  and  Laboratory  Analysis 1 . 50 

Tucker  (J.  H.) — Manual  of  Sugar  Analysis.  Including  the  applications 
in  general  of  analytical  methods  to  the  sugar  industry,  with  an 
introduction  on  the  chemistry  of  cane  sugar — dextrose,  levulose.  .  .  3.50 

Valentine  (W.  G.) — Twenty  Lessons  in  Inorganic  Chemistry,  embracing 
the  course  of  instruction  in  chemistry  required  for  the  first  stage  of 
elementary  classes  of  the  science  and  art  department 

Van    Cotta   (Bernard)— Rocks   Classified    and  Described ;    a   treatise  on 

lithology *  •  50 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF.  211 

Tan  Wagenen  (T.  F.)  —  Manual  of  Hydraulic  Mining  for  the  use  of  the 
Practical  Miner.  A  treatise  on  the  general  methods  of  placer  min- 
ing ;  directions  for  the  miner  ;  properties  of  water  ;  construction  of 
water-ways;  flow  of  water  in  flumes  and  ditches;  iron  piping;  nozzles 
and  discharge  ;  the  sluices,  etc  ................................  $  1  .  00 

Wanklyn  (J.  Alfred)  —  Milk  Analysis.     A  practical  treastise  on  the  ex- 

amination of  milk  and  derivatives:  cream,  butter  and  cheese  ......         1.00 

Wanklyn  (J.  Alfred)  —  Water  Analysis.     A  practical  treatise  on  the  ex- 

amination of  potable  water.     Illustrated  .................  "  ......         2  .  00 

Watt  (Alex.)  —  Electro  Deposition  ;  a  practical  treatise  on  the  electrolysis 

of  gold,  silver,  copper,  nickel  and  other  metals  and  alloys  .........         3.50 

Watt  (Alex.)—  Electro-Metallurgy  ...................................         1  .75 

Weichmann  (Ferdinand  G.)  —  Sugar  Analysis  for  refineries,  sugar-houses 
and  experimental  stations  ;  also  a  handbook  of  instruction  in  schools 
of  chemical  technology.  Illustrated  ............................  2  .  50 

Whipple  (George  Chandler)  —  The  Microscopy  of  Drinking  Water  ;  a 
guide  to  the  water  analyst,  and  aid  to  the  study  of  microscopic 
aquatic  life  ..................................................  3  .  50 


Wiley  (Harvey  W.) — Agricultural  Analysis. 


Vol.  1,  Soils  .............         3.75 

•  ' 


ral    Pro 
ducts  .........         3.75 


Williams  (R.  P.) — Laboratory  Manual  of  General  Chemistry .75 

Williams  (E.  H.)— Manual  of  Lithology 3.00 

Williams    (Geo.    H.) — Elements   of    Chrystallography    for    students    of 

chemistry,  physics  and  mineralogy 1 . 50 

Wilson  (E.  B.)— The  Cyanide  Process.          1 .50 

Wilson  (E.  B.)— Hydraulic  and  Placer  Mining 2.00 

Wilson  (E.  B.) — Practical    Mine  Ventilation.      For   the  use  of  minimg 

engineers,  students  and  practical  men 1  •  50 

Wohler  (Frederick)— Handbook  of  Mineral  Analysis.     Edited  by  H.  B. 

Nason;  illustrated ". 3.00 


212  JOHN   TAYLOR   &  CO.,  SAN   FRANCISCO,  CALIF. 

PRICE  LIST 

OF 

CHEMICALS 


FOR 


ASSAYERS'  USE,  REDUCING  ORES,  AND  FOR 
COLLEGES  AND  SCHOOLS. 


The  demand  for  these  Chemicals  in  many  cases  being  for  small  quantities,  we 
keep  a  stock  on  hand,  put  up  in  convenient  sized  packages  ;  many  in  1  oz.  bottles, 
chemically  pure,  for  tests.  In  original  packages  the  lowest  quotations  will  be 
given,  and  for  articles  that  are  subject  to  fluctuation,  in  all  cases  our  customers  will 
receive  the  benefit  of  the  lowest  market  rates. 

Our  chemically  pure  Chemicals  are  manufactured  by  Merck  &  Co.,  and  other 
well-known  manufacturers,  and  are  such  as  we  have  sold  for  years,  having  always 
found  them  of  full  strength  and  pure. 

Keeping  all  our  Chemicals  listed  in  stock,  we  can  fill  orders  promptly  and 
without  delay.  All  articles  ordered  that  we  do  not  keep,  we  will  use  our  best 
exertions  to  obtain. 

For  the  convenience  of  purchasers  (assayers  and  others  in  remote  places)  we 
keep  our  Chemicals  put  up  in  bottles  or  cartons  in  convenient  sizes,  as  noted. 
Prices  on  all  in  the  list  have  been  carefully  revised  and  reduced  in  many  cases. 

Acids  can  be  shipped  by  rail  only  on  Mondays,  as  the  railroad  companies 
will  only  receive  them  on  that  day. 

Commercial  Acids,  Blue  Stone,  Cyanide- Potash,  Bone  Ash,  and  many  other 
staple  articles  that  are  produced  here,  we  furnish  at  lowest  market  rates. 

ALL  GOODS  PACKED  BY  EXPERIENCED  HANDS. 

CHEMICALS. 

Put  up  in  Bottles  or  Cartons,  which  are  included  in  the  price,  except  where  mentioned 
in  Bulk. 

Prices 
Prices  per  Ib.  per  oz. 


1   Ib.  %  Ib.  Yi,  Ib.  1  oz. 

Acid,  Acetic,  No.  8,  Pure  sp.gr 1,040 

5-lb.  bottles $1.25$..'..  $....     $. .         $.. 

In  pounds 35       


—     Acetic  Glacial,  C.  P.,  99 }0/ ,        .75 

Arcenous,  powdered 30         .35 

Boracic,  C.  P.,  powdered .°. .        .60         .75         .90         .15 

Carbolic,  C.  P.,  loose,  cryst 75       .... 

Chromic,  coml.,  for  batteries,  5-lb.  bottles.  ...        .50 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF.  213 

Prices 
Prices  per  Ib.  peroz. 


1  Ib.  %  Ib.          Yt,  Ib.  1  oz. 

Acid,  Chromic,  pure,  cryst $1 . 00    $ $ . . .  .     $  .25 

Citric 1.40       1.60      1.75         .20 

Hydrochloric   (Muriatic)    coml.,   22°  Beaume. 

In  6-lb.  bottles,  per  bottle. $   .75     

"  coml.,  in  carboys,  about  120  Ibs.        .04       

Carboys,  each,  $2.25. 

strictly  C.  P.,  sp.  gr.,  1.20,  free 
from  arsenic,  chlorine,  iron  and 
sulphur. 

In  1-lb.  bottles 40       

in  6-lb.  bottles .30       

In  carboys 15       

Carboys,  each,  $2.25. 

Hydrofluoric,  in  Rubber  Bottle 2.00       2.50       3.50         .40 

Molybdic,  C.  P 2.50      3.00       35 

Nitric,  coml.,  38°  Beaume. 

In  7-lb.  bottles,  per  bottle $1 . 25     

"       in  carboys,  about  140  Ibs 08       

Carboys,  each,  $2.25. 

"       strictly  C.  P.,  sp,   gr.,  1.42,  free  from 
arsenic,  chlorine,  iron  and  sulphur. 

In  Ib.  bottles 40 

in  7-lb.  bottles 30       

in  carboys 15       

Carboys,  each,  $2.25. 

(fuming) 75         .80       

Oxalic,  bulk 15       

"       C.  P.,  cryst 75         .85       1.00         .15 

Phospho  Molybdic 2 . 25         .30 

Phosphoric  (glacial),  in  sticks 1 .25       .30 

(diluted) 40       

(syrupy),85^ 75       .... 

Picric,  C.  P 30 

Pyrogallic,  resubl .50 

Sulphuric,  com'l,  66°,  Beaume.  

In  9-lb.  bottles,  per  bottle  . .  .$   .75 

in  carboys,  about  180  Ibs 02       

in  iron  tanks,  1600  Ibs Qiy2    

Tanks,  each  $8. 00. 
Carboys,  each,  $2.25 

Sulphuric,  strictly  C.  P.,  sp.,  gr.,  1,845,  free 
from  arsenic,  nitrogen,  organic  matter  and 

sulphurous  acid,  in  1-lb.  bottle 40       

9-lb.  bottle 30 

in  carboys  about  180  Ibs 15       

Carboys,  each,  $2.25 

Sulphuric,  fuming 65       

Sulphurous ....  .40 


214  JOHN   TAYLOR   &    CO.,  SAN   FRANCISCO,  CALIF. 


Prices 
Prices  per  Ib.  per  oz. 


lib.  y2ib.        y4\b.  ioz. 

Acid,  Tannic,  C.  P $ $ $ $.30 

Tartaric,  C.  P.,  cryst 1.00  1.25       1.50  .20 

"      powdered 1 . 00 

Alcohol,  95^,  1  gal.  tin $3.25     

"    ^  gal.  bottle 1 .65     

"    X        "  90     

"    1  pt.    "  50     

Wood,  per  gallon 1  50     

Absolute,  per  Ib 4. 00     

Alum,  powered 10       

cryst 10       

Ammoniacal,  pure 50       .10 

—  Chromic,  C.  P 60         .70         .15 

Ferric,  cryst 50         .60       15 

Aluminum,  in   slabs,   ingots,    sheet   and   wire,    at 
lowest  market  rates. 

Acetate,  pure  dry .25 

Chloride,       "       1.25       1.50,  1.75         .20 

Sulphate,  pure 80       .15 

Acetate,  pure  cryst. 1 . 25       1 . 50  1 . 75         .25 

Arsenate .35 

Bi-Carbonate,  cryst 1.50       1.75  2.00         .25 

Ammonium,  Bi-Chromate,  chem.  pure,  cryst 1.25       1.50       1.75         .25 

Bi-Sulphate 1.50      1.75      2.00         .30 

Bromide,  U.  S.  P 1.00       20 

Carbonate,  com'l,  bulk 20       

chem.  pure 60         .75         .90         .15 

Chloride  (sal  ammoniac)  gran.,  bulk.  .        .16       

"  "         "  lump,     "    ..        .16       

"         chem.  pure,  gran 50         .60         .75         .15 

Chromate,  neutral,  pure.    3.25       3.75         .50 

Fluoride,  cryst -35 

Hydrate  (Aqua  Ammonia)  20°  Beaume 

in  4*4  Ib.  bottle,  per  bottle.  .$   .90     

in  carboys 12       .... 

in  tanks 10       

Carboys,  each,  $2.50 

Tanks,  each,  $10.00 

Concentrated  26°  Beaume  strictly  C.  P., 

sp.    gr.    0.90  Baker  &  Adamson, 

in  1-lb.  bottles 40       

in  4-lb.  bottles,  per  bottle $1.00 

in  carboys 15       .... 

Carboys,  each,  $2.50 

Hydrosulphuret  (sulphide),  sol 75         .90       1 . 10 

Iodide..  50 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAUF.  215 


Prices 
Prices  per  Ib.  per  oz. 


1  Ib.  %  Ib.  Yi  Ib.  1  oz. 

Ammonium,  Molybdate,  chem.  pure $2.00    $2.25    $2.50    $  .35 

Nitrate,  gran 50         .70         .90         .20 

fused 50       

Oxatate,  chem.  pure 1 .00       1 .25       1 .50         .20 

Phosphate,  pure 1.00       1.25       1.50         .25 

Succinate,  pure,  cryst .50 

Sulphate,  purified 50         .60       ....          .15 

Sulphite,  chem.  pure .30 

Sulphocyanide,  pure 1.00       1.25       1.50         .20 

Tartrate 25 

Antimony,  Metallic,  bulk 25       

chem.  pure .25 

Chloride,  pure  cryst .30 

Oxide,  white,  true .25 

Tartrate 40 

Arsenic,  Metallic,  pure  cryst 60         .75         .90         .20 


Argols,  in  bulk,  Red  powd 15 

In  bbls. ,  quotations  given. 

Asbestos,  long  fiber .50 


Barium,  Metal,  per  gramme $4 . 00     

Acetate,  chem.  pure 1 . 75       .25 

Carbonate,  pure,  prec 50  .60         .80         .20 

Caustic,  see  Barium  Oxide  hydrated. 

Chlorate,  chem.  pure 90  1.00       1.25         .15 

com'l,  in  bulk 16       

Chloride,  chem.  pure,  cryst 50  .60         .80         .15 

Barium,  Hydrated,  pure,  cryst 60  .75         .90         .20 

Nitrate,  pure,  cryst 50  .60         .80         .15 

Nitrite 25 

Sulphate,  pure,  precip 75  .85       1.00         .15 

Sulphide,  pure 1.15  1.30       1.50         .15 

Beeswax,  bulk. . .  .45  


Bismuth,  Metallic,  pure,  bulk 3 .00  .25 

Bromide 1 . 20 

Nitrate,  cryst 3.00       30 

Nitrite 40 

Oxide  Hydrated,  pure .50 

Oxychloride .50 

Bleaching  Powder,  Chloride  L,ime,  in  Ibs 20         

"  in35-lb.  tins.  .04^ 

"  in  bbls.,  quotations  given. 


Bone  Ash,  No.  2,  bulk 

"     2,  100-lb.  boxes 03 


216  JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CAUF. 


Prices 
Prices  per  Ib.  per  oz. 


1  Ib.  %  Ib.  y4  Ib.  1  oz. 

Bone  Ash,  No.  2,  in  bbls.,  special  rates. 

"     1,  in  bulk $.04£$....     $....     $.... 

"'    1,  100-lb.  boxes 04  

"     1,  in  bbls.,  special  rates. 

"     1,  Extra,  in  bulk 06  

"     1,     "     100-lb.  boxes 05|  .... 

"     1,     "     in  bbls.,  special  rates. 

Washed 15  

"       100-lb.  boxes 12  

NOTE— The  superior  quality  of  our  Bone  Ash  is  well 
known.  For  many  years  we  have  supplied  the  mining 
trade  West  of  the  Rocky  Mountains  ;  also,  Mexico  and 
Australia. 

Bone,  Black,  see  Charcoal,  animal. 

Borax,  cone 10       ....  

"       sacks,  per  Ib.,  special  rates. 
"     per  ton, 

Refined  cryst.,     "          12       

"      per  bbl.,  special  rates. 
"    ton, 

Powd 12       

"         "     bbl.,  special  rates. 
"     ton, 

Glass,  powd 40       

in  25,  50  and  100-lb.  boxes  ...        .35 
"         "          ''  bbls.,  special  rates. 

Brazil  Wood,  Test  Papers,  per  doz $  .  50     

Bromine, 1.00      1.25      1.50        .25 

Brimstone,  see  Sulphur. 

Cadmium,  Metal,  in  sticks 2 . 25       .25 

Bromide .30 

Chloride 50 

Nitrate,  pure,  cryst .40 

Sulphide .30 

Calcium,  Bromide .30 

Carbonate,  bulk 10       

Chloride,  fused,  lumps 50         .65         .90       

pure  gran 50  .65         .90 

dry  white 60       

Fluoride  (fluorspar\  bulk 15       

Oxide,  hydrated,  from  marble 60       .15 

Phosphuret 60 

Sulphate,  pure,  precip 85  1  00       1.15         .15 

Sulphide .60       

Sulphite 50       20 

Carbon,  Bi-Sulphide,  sol.,  highly  rectified 50         .75         .90       


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF.  217 


Prices 
Prices  per  Ib.  per  oz. 


1  Ib.  %  Ib.  K  Ib.  1  oz 

Cerium,  Nitrate $•••     $••••     $••••     $  -50 

—     Oxalate .  . 25 

Charcoal,  Animal  (bone  black; 10       

Willow,  powdered 15       

"        Ellis',  powdered,  in  #-lb.  bottles, 

per  doz $2 . 25     


Chromium,  Sulphate '.  .35 

Cobalt,  Metal,  gran 60 

Acetate .75 

—  Carbonate .50 

Chloride,  pure,  cryst .40 

sol 25 

Chromate ....          .70 

—  Nitrate,  pure,  cryst .50 

sol - ..        ....          .25 

Oxide 75 

Copper,   Metal  turnings 40       

' '      gran . ,  chem .  pure 75       

' '      foil,  pure 75       

Acetate,  chem.   pure 1 .00       .20 

Carbonate,  chem.  pure 1 . 00       .20 

Chromate 30 

Chloride  (Bi-Chloride) 75         .85       1.00         .20 

Cyanide .30 

Iodide 80 

Oxide,  black 60         .75         .90         .20 

red,  pure 1.57      2.00      2.25         .30 

Nitrate,  chem.  pure 80      1.00       1.25         .20 

Sulphate  (blue  stone) 10       

bbls.,  special  rates. 

Pure 60         .80       1.00         .15 

Ether,  Sulphuric,  conct.,  1-lb  tins, .90       20 

«  "       3  "       "    .80       

Squibbs,  100  c/c,  tin,  each 40       

"       250  c/c,    " 75       

"      500  c/c,    "       1.40       

Fire  Clay,  05       

per  bbl.  special  rates. 

Flux,  Black 90       

White 1.00       

Plattner's,  lead  flux 1 .25       


Glass,  fine  powdered, 15       

Wool,  y2  oz $1.20     1.00 

Gold,  Chloride,  dry,  15  grain  bottle 60     


218  JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF. 


Prices 
Prices  per  Ib.  per  oz. 


1  Ib.  %  Ib.  %  Ib.         1  oz  . 

Graphite,  .....................................  $    10    $  ____     $  ____  $  .... 

finest,  powdered,  pure  .....    ........................  .20 

Iodine,  resub  ..........................................  .50 

1  1-  id  in  in,  metal,  15  grain  bottle  ...........     $2.00     ........ 

Iron,  metal  filings,  coarse,  .......................  10       ........ 

fine,      ........................  15 

-  Wire,  pure,  for  standardizing,  1-oz.  spools  .................          .20 

-  Metal  scrap  sheet  ...........................  10       ............ 

--     "       gran.,  chem.,  pure,  by  alcohol  ...........  50        ............ 

-  Acetate,  in  scales  ..................................          ...          .40 

-  Arsenate  ..........................................          ...          .30 

-  Arsenite  ..............................................          .40 

-  Chloride,  dry  ferric  .........................  60         .75         .90         .20 

-  Iodide  .................................................  50 

-  Oxide,  black  ........    ......................  60       ____  .15 

-  "        red  anhydrous  .......................  80       1.00  1.20         .15 

—  Phosphate  ........................................  .30 

--  Sulphate  (copperas)  ..............  ...........  05       ....  .... 

in  bbls  .,  special  rates. 

refined,  pure,  cryst  .................  15  ........... 

-  Sulphide  (Sulphuret),  bulk  ...................  20  ____ 

-  Tannate  .....................................  .30 

--  Valerianate  ...................................  ........          .45 

-  and  ammonium  sulphate,  pure  ................  75  ....       1  .00       .... 

Kaolin,  powdered  ...............................  10       .... 

Lead,  metal,  chem.  pure,  for  assaying,  in  small  bars.         15        ............ 

-  metal,  chem.  pure  in  foil,  rolled  thin  ..........  25       .......          .... 

"      gran  ....................  15 

—       "  "         "          "     25  Ib.  hags  .........  12 

NOTE,  —  We  guarantee  our  granulated  test  lead  to  contain  not  more  than  .05  troy  ounces  of 
silver  to  the  ton  of  2000  Ibs.,  consequently  if  40  grammes  of  it  are  used  in  assaying  yto  A.  T.  of 
ore,  the  silver  assay  is  accordingly  increased  ^0  troy  ounces  per  ton  of  ore. 


Lead,  Acetate  (white),  sugar  lead,  com'l  .............  20       ............ 

chem.  pure  .........................  50         .60         .65         .15 

-  Carbonate,  pure  .......................................          .10 

-  Chloride,  pure  .............................      1.00       ...          .....  20 

-  Chromate,  pure,  fused  ......................      1  .  40       ........          .30 

-  Nitrate,  pure,  U.  S.  P  ......................  50         .60         .25         .20 

-  Phosphate  ..................................  ..........          .40 

-  Protoxide  (Litharge),  J.  T.  &  Co.,  bulk  .....        .  12^    ........ 

25-lb.  kegs  ......................  10       ........ 

chem.  pure,  bulk  ...............  .        .15       ............ 

chem.  pure,  25-lb.  bags  ........  ...        .  13  J^    ............ 

-  Oxide,  Red  (Pb.  3  O4),  minimum  .............  15       ____ 

-  Per   Oxide  (Pb.  O2)  ........  ,  .....................  .  .  .15 

-  Sulphate,  chem.  pure  .......................  60         .80       1  .00         .15 


JOHN   TAYLOR   &   CO.,  SAN   FRANCISCO,  CALIF.  219 

Prices 
Prices  per  Ib.  per  oz. 


lib.         y2lb.  %lb.  loz. 

Litmus,  gran  ............  .......................  $  .  40    $  ____     $  ____     $  ____ 

-     Paper,  blue  and  red,  per  doz.  sheets.  .  .  $.40     ................ 

'  '       blue,  in  book  .................  10     ................ 

red,         "        .................  10     ................ 

"       blue   or  red,  12  books  in  each  box, 

per  box  .....................  60     ................ 

Lye,  concentrated,  "Our  Best,"  48  1-lb.  tins  in  case, 

per  case  .............................  $3.25     ................ 

Magnesium,  metal,  ribbon  ...........................  ....          .75 

Chloride,  chem  pure,  cryst  .............  70         .80       1  00         .15 

Sulphate,          "  "      ............  50         .60         .80         .15 

Manganese,  Metal,  per  gramme  ..............  $  .  15     ................ 

Chloride  .........................................  20 

—       Oxide,  black,  in  bags,  fine  ground,  for 
chlorination  works,  per    ton.     Quota- 
tions given 
Oxide,  bulk  .........................  05       ............ 

Sulphate,  pure  cryst  ...................  90       1.00       1.25         .20 


Mercury,    (Quicksilver)    in    iron   flasks,   76j^    Ibs. 

lowest  market  rates 
less  than  flasks,  in  bottles  ...............  60       ............ 

—       Bi-Chloride     (corrosive    sub.),    (Mercuric 

Chloride),  (Recrystalized)  Merck's  ____     2.00       2.10       2.25         .30 

Bi-Chloride,  Commercial  .................  80       ............ 

Bi-Sulphate  (see  Sulphate)  .............................. 

Chloride  (Calomel),  (Mercurous  Chloride), 

(Mono  Chloride)  .....................     2.00       2.10       2.30         .25 

Cyanide  ...........................................          .50 

Nitrate  (Mercurous)  ............................       2  .  25         .35 

Oxide,  black  ..................................       2.25         .40 

"        red  (Mercuric),  levigated  ................       1.75         .25 

Pernitrate  (Mercuric)  ...............................          .35 

-      Sulphate  (Bi-Sulphate)  (Mercuric)  .......      1  .60       ____       2.00         .25 


Molybdenum,  metal,  per  gramme $  .60 


Nickel,  metal,  granulated 1 . 50       20 

Acetate '     .50 

Chloride 30 

Nitrate,  pure 30 

Oxalate 50 

—     Oxide,  black 30 

Phosphate 50 

Sulphate 20 

Nutgalls,  powdered,  bulk .20       

Paraffine,  20      


220  JOHN   TAYLOR  &   CO.,  SAN   FRANCISCO,  CALIF. 


Prices 
Prices  per  Ib.  per  oz. 


1  Ib.            y2  lb.            #  Ib.  1  oz. 

Phenol-phtalein,  pure  ...............  ..........     $...      $..        $  $1  .00 

"     in  y2Qz.  hot  ..........................  1.25 

Phosphorous  ................................       1.10      1.20      1.30  .20 

Red  (amorph)  ....................  -35 

Platinum,  metal,  see  catalogue  pages  143-146  .... 

Bi-Chloride,  (Chloride)  Solution  10$.  .  .  1  .25 

Potassium,  metal,    1  oz  ........................ 

_             «      yz  «  ....................................  2.25 

_              <«       i^   "  ....................................  2.50 

_             «      i     «  ....................................  2.75 


.TXUCLillC,     i;  11C  111  .     pUlC  

Antimonate    pure                      

.35 

25 

Arsenite,    pure  

.25 

Bi-Carbonate  in  1  lb   tins 

.30 

(t               «  g   i  «      « 

.25 

it                          «  t    1  Q   K        (i 

20 

pure,  cryst  

.50 

.60 

.80 

.15 

Bi~Chromate   for  batteries   bulk 

20 

"              chem.  pure,  cryst  

.60 

.80 

1.00 

.15 

Bi-Sulphate,         "         "         "-     

.80 

1.00 

1.25 

.20 

Bi-Tartrate,  pure  

1.10 

1.25 

1.40 

.25 

Bromide. 

1.00 

1.25 

1.50 

.20 

Carbonate  (Salts  Tartar)  1-lb   tin 

25 

"           5  lb   tins 

20 

10  "     " 

.18 

"         bbls.  special  rates 
_  ««        chem.  pure  .................  75          .90       1.00         .20 

-  Caustic,  white,  purified,  in  sticks  ......  60         .80      1.00         .20 

"         pure,  purified  by   alcohol,  in 
sticks  .......................  .  ..       1.00      1.25       1.50 

Chlorate,  bulk  .......................  25    ..... 

_  "          cryst  .  chem.  pure  ..  ........  60         .80       1.00 

__          Chloride,  chem  .  pure  ................  60         .75         .90         .15 

Chromate,    "         "     ................  85       1.15       1.35         .20 

Cyanide,  fused  for  milling  purposes  ...         .45 

_  "  "      "         "         '«  lOlb.tins         .35       ____ 

-  "  "      "         "         "   in  cases 
1201bs.  special  rates    ' 

Cyanide,  chem  .  pure  98%-99%  ........  60 

"  "          "         "    in  cases  112 

Ibs.  special  rates 
Cyanide,  absolutely  chem.  pure  ...... 

-  Ferricyanide,  bulk  ..................          .50 

chem.  pure  ............       1.25       1.40       1.60         .30 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF.  221 


Prices 
Prices  per  Ib.  per  oz- 


lib.  ^lb.  y4Vo.  loz. 

Potassium,  Ferrocyanide,  bulk $     .50     $ $ $ 

chem.  pure 1.00  1.20       1.40         .20 

Iodide 3.25  3.50      3.75         .35 

Nitrate  (Nitre),  English  refined,  cryst.          .15       

"             "         chem.  pure 60  .80       1.00         .20 

Nitrite,  chem.  pure,  sticks 1.50  1.60       1.70         .30 

Oxalate  (Neutral),  pure 60  .75      1.00         .20 

Permanganate,  pure  cryst ...          .50  .60         .70         .15 

Sulphate,  pure  powdered 45  .60         .80         .20 

Sulphide 40       20 

Sulphite 1.00       20 

Sulphocyanate,  pure 1.25  1.50       1.75         .25 

Tartrate,  chem.  pure .25 

and  Sodium  tartrate,  C.  P.,  (Rochelle 
Salts) 1.00       

Quartz,  Sand,  (see  Acid  Silicate) 

Resin,  bulk 04      

In  bbls.  special  rates. 

Reddle,  in  sticks 20       

Silex,  powdered  quartz .15       

Silica,  fine  white  sand .02       

Silyer,  metal,  foil,  proof  silver 1 . 60 

"     chem.  pure,  1000  fine, ,  .  2.50 

Amalgam .40 

Chloride 1.60 

Cyanide 2 . 25 

Nitrate,  cryst 7.75      8.00      8.25  .65 

chem.  pure,  Merck's  guaranteed  re- 
agent         1 . 75 

NOTE — Silver  compounds  fluctuate  in  value. 

Sodium,  metal 2.00       40 

Acetate,  chem.  pure 75         .85       1 .00         .20 

Amalgam 1 . 25        

Arsenate,  pure .20 

—      Arsenite,  pure .20 

Bi-Borate  (see  Borax)  chem.  pure,  cryst. .        .20 

Bi-Carbonate,  112  Ib.    kegs,     quotations 

given 

Bi-Carbonate,  English  bulk 06  

112  Ib.  kegs,  special  rates 

"  chem.  pure,  powdered .40  .20 

Bi-Chromate,  for  batteries,  1-lb.  bottle.  .  .          .60  

5  Ib.  bottle,  per  Ib 50       

chem.  pure ....          .25 

Bi-Sulphate,  pure  cryst .80       .15 


222  JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


Prices 
Prices  per  Ib.  per  oz. 


1  Ib.  yz  Ib.           'X  H>.            1  oz. 

Sodium,  Bi-Sulphite,  cryst.,  pure $     .70  $   .85     $1.00     $   .20 

Bromide .25 

Carbonate  (Sal  Soda) .   cryst .05       .... 

"     bbls.    special 
rates 

"  "  dry  for  assaying,  bulk          .06        

bbls.  special  rates 

(Soda  Ash) 05       

"  "  casks,  special  rates 

"                  "               chem.  pure,  dried         .50  .60         .75         .20 

Caustic,  98%  gran,  in  10-lb.  tins,  per  Ib  . .          .15       

"        60%  in  40  Ib.  cans "  .10 

"        60%  "  drum,  special  rates 
— —  "         70T    "       "  "          " 

purified  sticks 60  .75         .90         .20 

"  "         by  alcohol,  sticks ,       1.00       

Chlorate,  pure  cryst 70       .20 

Chloride  (Salt)   *4  ground,    in  sacks,  per 

ton,  special  rates 

Chloride  chem.  pure  cryst .50       .15 

Hyposulphite,  bulk,  Kng.  refined .07       

112  Ib.  kegs,  special  rates. 

chem.  pure 50  .60         .75.        .15 

Nitrate,  commercial,  bulk .06       

"       chem.  pure,  cryst .50       .15 

Nitrite,  chem.  pure,  in  sticks 1.50  1.75       1.90         .25 

Nitro,  Prusside,  chem.  pure 1 .00 

Oxalate,  chem.  pure 1.10  1.25       1.40         .20 

Per  oxide,  in  tins .90  ...                     .... 

Phosphate,  twice  purified,  cryst 40  .60         .80         .15 

Phosphite,  pure .60 

Silicate,  sol.  (water  glass),  1  p.t $  .30       ....  

cryst 30 

Sulphate,  chem .  pure,  cryst .50  ....                        .15 

'     Sulphide,  true  cryst 75         .90       20 

Sulphite,  pure  cryst .30       .15 

—      Tartrate 20 

Wolframate  (Tun  gstate)  pure 1.00         .20 

and  Ammonium  Phosphate  (Microcosmic 

Salt) 1.25  1.5G      1.75         .25 

Steel,  metal  filings .20       

14     wire,  piano  ^  Ib.  pkg 2.00       '       

Strontium,  Caustic  (Oxide) 

Chloride,  cryst 1 . 00       20 

Nitrate,  pure  dry 1.10  1.25       1.40         .20 

Nitrite,  chem.  pure .  1-00 

Sulphate,  purified 25 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF.  223 


Prices 
Prices  per  Ib.  [per  oz. 

lib.  J41b.  %  Ib7          loz. 

Sulphur,  ground,  bulk $  .  05     $ ....     $ ....     $ 

"         bbls.  special  rates. 

Sublimed,  bulk 06       

11  bbls.  special  rates. 

(roll  Brimstone) 10       

bbls. ,  special  rates. 

Tin,  metal,  pure,  small  bars  or  pencils,  bulk 1.00       

pure,  gran. ,  bulk 1 . 00       

-  foil,  pure,  bulk 1.00       

-  Chloride,  Stannous,  pure,  cryst 80  1 . 00       1 . 25         .20 

-  Oxide,  white,  powdered,  pure  cryst 1.25  1.40       1.50         .20 

Tumeric,  powdered .15 

paper,  doz 40       

Uranium,    metal,  per  gramme $3 . 00       

Acetate 75 

Chloride 75 

Nitrate,  chem.  pure .75 

Water,  dist'd,  10-gal.  carboy,  per  gal 12^  

5    "     dem.,       "     " 12% 

1    "         "          "      " 15  

10    "     carboy,  each 2.25  

5    '«     box  dem 1.75 

«         1    ««       "       ««  .1.00  


Zinc,  metal,  sheet  scrap 


• '     coarse  gran -25       .... 

"     chem.  pure,  small  bar -50       .... 

"        "          "      coarse  gran 50 

"     pure  gran. ,  free  from  arsenic,  Merck's.          .75       .... 

Amalgam 1 . 25       ....  .... 

Bromide 

Carbonate,  pure  precip   

Chloride,  dry -20 

Oxide,  by  dry  process 30         .40         .50 

•'        chem.  pure,  by  wet  process -50       .... 

Phosphate 

Shavings 40       

Sulphate,  chem.  pure 35         .50         .60         .15 


224 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


REFERENCE    TABLES    AND    INFORMATION. 


COMPARISONS  AND  EQUIVALENTS. 


The  U.  S.  Standard  of  weight  is  the  Troy  pound,  and  was  copied  in  1827  from 
the  imperial  Troy  pound  of  England  for  the  use  of  the  U.  S.  Mint,  and  there 
deposited.  It  is  standard  in  air  at  62°  Fahr.,  the  barometer  at  30  inches. 

Troy  Weight. 

24  grains  =      1  dwt. 
480      "      =  20    "      =1  oz. 
5760      "      =240    "     =12  "  =  lib.  =  22.816  cub.  in.  of  distilled  water  at  62°. 

Avoirdupois  Weight. 

437. 5  grains  =  1.  oz. 

7.000.         "  =          16.  "  =          lib. 

700.000.         "  1600.  <(  =  100.  "    =      1  cwt. 

14.000.000.         "  =  32.000.  "  =  2000  "    =  20    "     =  1  ton. 


Apothecaries'  .Weight. 

20  grains  =       1  scruple. 


60 

480 
5760 


=      3 

=     24 
=  288 


=     1  drachm. 


=  96 


=     1  oz. 

=  12  "    =1  Ib. 


Milligramme  . 
Centigramme 
Decigramme  . 
Gramme . . 


1  Decagramme. 


Metric,  or  French  Weights. 


Grammes. 

.001  = 
.01  = 
.1 


1  Hectogramme 

1  Kilogramme 

1  Myriagramme 

1  Quintal =    100000. 

1  Tonneau . .  . .  -  1000000. 


1. 
10. 

100. 
1000. 
10000. 


.01543 
=      .15432 
=    1.5432 
=  15.432     = 


Avoin  Lbs. 


Troy        Troy         Avoir. 

Ozs.          Lbs.  Ozs. 

.032=        .00267=      .03528=        .0022047 

.321=   .02679=   .3528  =   .022046 
3.215=   .26792=  3.52758=   .22046 
32.150=  2.6792  =35.2758  =  2.2D46 

26.792  = 22.046 

267.92   =  220.46 

.  2679.2    = 2204.6 


Metric,  or  French  Linear  Measure. 

Metre.  U.  S.  Ins.  Feet. 


1  Millimetre.  . 
1  Centimetre.  . 

.Oi 
.0 

[)1=            .03937 
1   =           .3937 

.00328 
.0328 

Yards. 

1  Decimetre  .  . 

.1 

3.937 

.3280* 

i  =           .10936 

1  Metre  

1. 

39.3704 

3.2808 

1.0936 

1  Decametre  .  . 

.  =       10. 

=     393.704 

=       32.808 

=       10.936 

Miles. 

1  Hectometre 

-     100 

_ 

328.08 

=     109.36 

=    .0621375 

1  Kilometre..  . 

.  =    1000. 

_ 

...  3280.8 

=    1093.6 

=    .621375 

1  Myriametre. 

.  =  10000. 

...32808. 

=  10936. 

=  6.21375 

JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CAUF.  225 


Reference  Tables  and  Information. — Continued. 


Metric,  or  French  Cubic  or  Solid  Measure. 

Cu.  Metres.      U.  S.  Cu.  Ins. 

1  Cubic  Centimetre  ..=  .000001  =              .061025 

1  Cubic  Decimetre. . .  =  .001                     61.025  U.  S.  Cu.  Ft. 

I  Centistere =  .01                      610.25         =  .353156  U.  S.  Cu.  Yds. 

1  Decistere =  .1                     6102.5           =  3.53156  =          .  13080 

1  Stere =  1.  =    35.3156  =       1.3080 

1  Decastere =  10.  =    353.156  =     13.080 

1  Hectostere =  100.  =    3531.56  =    130.80 

Assay  Ton  Weights. 

The  Assay  Ton  Weights  is  a  system  made  up  from  a  comparison  of  the  Avoir- 
dupois, Troy  and  Gramme  Weights,  and  will  be  found  extremely  simple  and  useful, 
saving  a  vast  amount  of  calculation  and  labor. 

The  unit  of  the  system  is  the  assay  ton=29.1666  grammes.  Its  derivation  will 
be  seen  at  a  glance. 

1  Ib.  Avoirdupois=7,000  Troy  grains. 

2,000  Ibs. =1  ton. 

2, 000  x  7,000=14,000,000  Troy  grains,  in  one  ton  Avoirdupois. 

480  Troy  Grains=l  oz.  Troy. 

14,000, 000--480==29.1666  Troy  ozs.  in  2,000  Ibs.  Avoirdupois. 

There  are  29.1666  milligrammes  in  one  assay  ton  (A.  T);  hence  2,000  Ibs.  is  to 
1  A.  T.  as  1  oz.  Troy  is  to  1  milligramme. 

Therefore,  if  1  A.  T.  of  ore  assays  1  milligramme  of  gold  or  silver,  the  ton 
contains  1  ounce  Troy. 


226 


JOHN   TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


INDEX 


PAGE    i 

Acid  hydrometers 127 

Acid  pump,  glass 112 

Acid  trays 86 

Adapters,  glass 137 

Adjustable  triangles 130 

Agate  funnels 172 

Agate  mortars 35 

Agateware  sampling  pans 63 

Alembics 138 

Alkali  hydrometers 127 

Alkalimeters 162 

Alkalimeter  condensing  plates 162 

Alcohol  hydrometers 127 

Aluminum  grain  weights 28 

Amalgam  buckets 172-173 

Amalgam  dippers 173 

Amalgam  mortars 35 

Amalgam  scoops 172 

Amalgam  strainers 171 

Ammonia  hydrometers 127 

Analytical  balances 14-16 

Annealing  cups,  Battersea 58 

Annealing  cups,  Denver  clay 60 

Anvils,  Plattner's 71 

Apothecary  weights,  coin  shape 28 

Apparatus,  assays  of  manganese 162 

Apparatus,  blowpipe 183-194 

Apparatus,  blowpipe,  in  sets 195-199 

Apparatus  for  decomposition  of  water. ....  164 

Apparatus  to  measure  water  in  milk 129 

Areometer,  Nicholson's 129 

Asbestos  boards 80 

Asbestos  cloth 66 

Asbestos  mittens 65 

Asbestos  pads 80 

Aspirator  bottles 105 

Assay  balances 1-10 

Assay  balances,  extia  pans  for  balances  ...     13 

Assay  certificate  blanks 155 

Assay  crucibles 56-61 

Assay  furnaces 46-54 

Assay  pouring  moulds 67 

Assay  outfits 179-182 

Assay  ton  weights 20 

Assay  weights 11,  12,  20 

Atwood's  compass  and  clinometer 136 

Babo's  generator 159 

Bags,  duck 42 

Bags,  gas 139 

Bags,  ore  sample 42 

Bags,  rope  manila 42 

Baker  and  Adamson's  filter  paper 102 


Balances,  analytical 14-16 

Balances,  assay,  Becker's 5,  6 

Balances,  assay,  John  Taylor  &  Go's 7 

Balances,  assay,  Oertling's 1-4 

Balances,  assay,  Plattner's  blowpipe 10 

Balances,  assay,  Troemner's 8,  9 

Balances,  bullion 21-23 

Balances,  pocket,  assay 10 

Balances,  pulp 17,  18 

Balances,  specific  gravity 31,  32 

Ball  pean  hammers 72 

Bar  magnets 63 

Bark  hydrometers 127 

Batea's  wood 44 

Baths,  drying 91 

Baths,  sand 80 

Baths,  water 90,  91 

Batteries,  Bunsen's 175 

Batteries,  crowfoot  gravity 175 

Batteries,  Gonda 176 

Batteries,  gravity 176 

Batteries,  Grenet 176 

Battery  cells 177 

Battery  cloth 168,  169 

Battery  connections 177 

Battery  jars   177 

Battery  screens 167 

Battersea  annealing  covers 58 

Battersea  annealing  cups 58 

Battersea  crucibles 56,  57 

Battersea  crucible  covers 56,  57 

Battersea  muffles . 57 

Battersea  roasting  dishes 58 

Battersea  scorifiers 58 

Beakers,  Bohemian  glass 79 

Beakers,  copper  lipped 79 

Beaker  covers 81 

Beakers,  Griffins 79 

Beakers,  in  nests 79 

Beaume's  hydrometers 127,  128 

Becker's  analytical  balance 15,  16 

Becker's  assay  and  analytical  balance  riders,    13 

Becker's  assay  balances 5,  6 

Becker's  assay  ton  weights 20 

Becker's  assay  weights 11,  12 

Becker's  grain  weights 20 

Becker's  gramme  weights 20 

Becker's  portable  balance 5 

Becker's  pulp  balances 17, 18 

Beer  hydrometers 127 

Bell  glasses 1C5,  106 

Berzelius'  generator : 158 

Binding  posts 177 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


227 


PAGE 

Binding  screws 177 

Bink's  burette 118 

Black  lead  covers 62 

Black  lead  crucibles 62 

Black  lead  dippers 62 

Black  lead  stirrers 62 

Blank  labels. 154 

Blankets,  sluice 171 

Blanks,  assay  certificate 155 

Blowers,  Fletcher's  foot 99 

Blowers,  gold  dust 63 

Blowpipe  apparatus 183-194 

Blowpipe  apparatus  in  sets 197-199 

Blowpipe  balance,  Plattner's 10 

Blowpipe  furnaces 97 

Blowpipe  hammers,  Plattner's 71 

Blowpipe  lamp,  tin 88 

Blowpipe  outfit,  portable,  Harding's . . .  195,  196 

Blowpipe  scissors 73 

Blowpipe,  Taylor's 50 

Blowpipe  tips 92 

Blowpipes,  brazing 94 

Blowpipes,  Fletcher's 93,  94 

Blowpipes,  Hoskins' 49,  50 

Blowpipes,  jewelers'  form 92 

Blowpipes,  John  Taylor  &  Co's 92 

Blowpipes,  oxyhydric 94 

Blowpipes,  Plattner's 92 

Blowpipes,  Ross' 93 

Boards,  asbestos 80 

Boats,  combustion,  porcelain  147 

Boa"ts,  platinum   144 

Bohemian  glass  beakers     79 

Bohemian  glass  retorts 137 

Boiling  flasks 77 

Bonney  vise 74 

Books 202 

Borers,  cork 110 

Bosworth  crusher 38 

Bosworth  furnace 48 

Bottles,  aspirator 105 

Bottles,  cobalt 114 

Bottles,  filter  weighing 104 

Bottles,  filtering,  Bunsen's 162 

Bottles,  mixing 114 

Bottles,  reagent 150-153 

Battles,  salt  mouth 149 

Bottles,  sampling 42 

Bottles,  specific  gravity 122 

Bottles,  tincture 149 

Bottles,  wash 105 

Bottles,  wash,  Fresenius  81 

Bottles,  wide  mouth 149 

Bottles,  Woulf 104 

Brass  scoops 24 

Brass  stop-cocks Ill 

Brazing  blowpipes 94 

Brix'  saccharometers. .  .   128 


PAGE 

Brooms,  mill 174 

Brunton's  mine  transit 135 

Brushes,  bench  duster 37 

Brushes,  button 70 

Brushes,  camel's-hair 19 

Brushes,  mortar  dusting 37 

Brushes,  sluice  174 

Brushes,  steel 174 

Brushes,  test  tube 82 

Brushes,  wire 67 

Buckets,  amalgam 172,  173 

Bucking  boards  36,  37 

Bulbs,  nitrogen 165 

Bulbs,  potash 165 

Bullion  balances,  Becker's 21 

Bullion  balances,  Troemner's 22,  23 

Bullion  chisels 66 

Bullion  ladles .   173 

Bullion  moulds 66 

Bullion  platform  scales,  Fairbanks' 23 

Bullion  platform  scales,  Howe's 23 

Bullion  weights 26 

Bunsen's  alkalimeters 162 

Bunsen's  batteries 175 

Bunsen's  burners 95,  96 

Bunsen's  clamps 119-121 

Bunsen's  eudiometers 163 

Bunsen's  filtering  bottles 162 

Bunsen's  funnels 99 

Bunsen's  rapid  filtering  apparatus 160 

Burette  clamps 120,  121 

Burette  float  or  swimmer 117 

Burette  supports,  iron  and  wood 132 

Burettes,  Bink's 118 

Burettes,  Gawalowsky's 116 

Burettes,  Gay  Lussac's 118 

Burettes,  Mohr's 116,  117 

Burettes,  Shellbach's 117 

Burettes,  Squibb's 117 

Burner  attachments 96 

Burners,  Bunsen's 95,  96 

Burners,  Chaddock's 95 

Burners,  coal-oil 50 

Burners,  gasoline 50 

Burners,  Fletcher's  radial 98 

Button  brushes 70 

Button  hammers 71 

Calcium  chloride  tubes 147,  148 

Camel's-hair  brushes 19 

Capsules 85,  86 

Carboy  supports 113 

Casseroles 85 

Chaddock's  burette  supports 132 

Chaddock's  burners 95 

Chaddock's  clamps 118,  119 

Chalk  pencils 70 

Chamois  skins..  .   172 


228 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CAUF. 


PAGE 

Chapman's  couplings 160 

Chapman's  filtering  pump 160 

Chemical  labels 154 

Chemical  thermometers 124 

Chemicals 212 

Chisels,  bullion 66 

Chlorine  generators 157,  158 

Cider,  hydrometers 127 

Clamp  holders 121 

Clamps,  Bunsen's 119-121 

Clamps,  Chaddock's 118,  119 

Clamps,  for  burettes 120 

Clamps,  Hofman's 119,  120 

Clamps,  iron 121 

Clamps,  Stoddard's 118 

Clamps,  universal 121 

Clamps,  watch  glass 81 

Clamps,  wood 118 

Clasp  tongs 65 

Clayed  triangles 130 

Clinometer  compasses 136 

Coal-oil  burner 50 

Coal-oil  fire  test 129 

Coal-oil  hydrometers 127 

Coal-oil  stoves 98 

Cobalt  bottles 114 

Coddington  lenses 166 

Combination  furnace,  Hoskins' 52,  53 

Combined  vise  and  anvil 74 

Combustion  spoons 104 

Compasses 134-186 

Compasses,  pocket 136 

Concentrator 39 

Condensers,  Liebig's 137-138 

Condensing  plates 162 

Cone  graduates,  glass 115 

Cones,  platinum 144 

Copper  assay  outfits 182 

Copper  determination  flasks 78 

Copper  lamp 87 

Copper  lipped  beakers 79 

Copper  pans 44 

Copper  plates 39 

Copper  retorts 138 

Cork  borer  sharpener 110 

Cork  borers 110 

Cork  press,  rotary 109 

Corks 109 

Condensers 138-141 

Condensers  and  stills 140 

Couplings,  Chapman's 160 

Covers,  annealing  cup,  Battersea 58 

Covers,  Battersea  crucible 56,  57 

Covers,  beaker 81 

Covers,  black  lead 62 

Covers,  Denver  clay  crucible 59 

Crowfoot  gravity  batteries 175 

Crown  rolling  mill 76 


PAGE 

Crucible  and  muffle  furnace  combined  ....  54 

Crucible  covers,  triangular 61 

Crucible  filler 61 

Crucible  furnace,  Fletcher's 55 

Crucible  furnace,  Hoskins' 52 

Crucible  racks . .    61 

Crucible  skimmer % 65 

Crucible  tongs 63,  64 

Crucibles,  assay 56-61 

Crucibles,  Battersea 56,  57 

Crucibles,  black  lead 62 

Crucibles,  clay,  Denver 59 

Crucibles,  Hessian 61 

Crucibles,  iron 86 

Crucibles,  nickel 147 

Crucibles,  normal  school 86 

Crucibles,  platinum 143 

Crucibles,  rose  or  reduction 86 

Crucibles,  silver 146 

Crusher,  Bos  worth's 38 

Crusher,  Taylor's 38 

Crystallizing  glass  dishes 85 

Cupel  moulds 70 

Cupel  tongs 63,  64 

Cupel  trays 68 

Cupelling  furnaces,  Battersea 48 

Cupels 70 

Cutters,  glass 107 

Cyanide  plant 40 

Cylinder  and  spiral,  platinum 144 

Cylinder  graduates,  glass 115 

Dangler's  lamp 88 

Daniel's  hygrometers 126 

Decimal  grain  weights 28 

Decomposition  of  water  apparatus 164 

Deflagrating  spoons 104 

Deflagration  spoons 144 

Denver  clay  annealing  cups 60 

Denver  clay  crucibles 59 

Denver  clay  muffles 59 

Denver  clay  roasting  dishes 60 

Denver  clay  scorifiers 60 

Desiccator  dishes 164 

Desiccators 164 

Diamond  mineral  collections 200 

Diamond  mortars 35 

Digesting  flasks '. 165 

Dippers,  amalgam    173 

Dippers,  black  lead 62 

Dippers,  iron 173 

Dishes,  crystallizing,  glass 85 

Dishes,  desiccator 164 

Dishes,  evaporating 84,  85 

Dishes,  evaporating,  nickel 147 

Distillation  flasks 78 

Displacement  generators . .  159 

Dishes,  German  silver 123 

Dishes,  platinum 144 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


229 


PAGE 

Dishes,  silver 146 

Dryitig  baths 91 

Drying  ovens 91 

Dropping  tubes 122 

Duck  bags 42 

Duck,  enameled,  black 42 

Enameled  duck,  black 42 

Erlenmeyer  flasks 78 

Erlenmeyer's  test  tube  racks 83 

Ether  hydrometers 128 

Eudiometer  tubes 163 

Eudiometers 163,  164 

Evaporating  dishes 84,  85 

Evolution  flasks 78 

Extraction  apparatus  soxhlets 141 

Extraction  thimbles 104 

Fairbank's  platform  bullion  scales 23 

Faucets,  rubber 112 

Feet,  glass 19 

Figures,  steel 69 

File  handles 109 

Files 109 

Filler,  crucible 61 

Filter  paper,  B.  &  A 102 

Filter  paper,  Swedish 102 

Filter  paper,  Prat  &  Dumas 102 

Filter  paper,  S.  &  S 103,  104 

Filter  weighing  bottles 104 

Filtering  bottles,  Bunsen's 162 

Filtering  pumps,  Chapman's 160 

Filtering  pumps,  Richards' 160 

Filtering  rings 101 

Finger  cots 65 

Fire  test,  coal-oil 129 

Flat  wicks 98 

Flasks,  boiling 77 

Flasks,  copper  determination 78 

Flasks,  digesting 165 

Flasks,  distillation 78 

Flasks,  evolution 78 

Flasks,  Kjeldahl's 78 

Flasks,  polarization,  Kohlrausch's 123 

Flasks,  sugar 123 

Flasks,  volumetric 123 

Flasks,  wide  mouth 78 

Fletcher's  blowpipes 93,  94 

Fletcher's  blowpipe  furnaces 97 

Fletcher's  blowpipe  lamps 88 

Fletcher's  crucible  furnaces 55 

Fletcher's  crucible  furnace,  extra  parts  for    55 

Fletcher's  foot  bellows  99 

Fletcher's  radial  burner 98 

Floating  thermometers 124 

Flexible  filter  cone,  platinum 144 

Float  or  swimmer  for  burettes 117 

Fluxing  crucibles,  Battersea 56 


PAGE 

Forceps 33 

Fresenius'  alkalimeters 162 

Freseuius'  generator 158 

Fresenius'  wash  bottles 81 

Funnel  supports 133,  134 

Funnel  tubes 101 

Funnels,  agate 172 

Funnels,  Bunsen's 99 

Funnels,  glass 99-101 

Funnels,  ribbed 100 

Funnels,  rubber 100 

i  Funnels,  separatory 100,  101 

Furnaces 46-55 

Furnaces,  assay 46-55 

Furnaces,  Battersea  portable 48 

:  Furnaces,  blowpipe 97 

Furnaces,  Bosworth 48 

Furnaces,  cupelling,  Battersea 48 

Furnaces,  crucible  and  muffle  combined  . .  54 

,  Furnaces,  Fletcher's  crucible 55 

Furnaces,  Hoskins'  combination 52,  53 

Furnaces,  Hoskins'  crucible 52 

Furnaces,  Hoskins'  muffle 51 

Furnaces,  jackass 49 

Furnaces,  melting 46 

Gas  Bags 139 

Gasoline  burner 50 

Gasometers 139 

Gas  regulator  tubes 163 

Gauze,  wire 80 

I  Gawalowsky's  burettes . .  116 

Gay  Lussac's  burettes 118 

;  Geissler's  alkalimeter 162 

Geissler's  glass  stop-cocks 110 

Generators 158,  159 

Generators,  chlorine 157.  158 

Geological  hammers 71,  72 

German  gold  scales 30 

German  hand  scales 29 

German  horn  pans  for  balances 13 

German  pans,  extra,  for  balances 13 

German  silver  dishes 123 

Goggles 66 

Glass  acid  pumps 112 

Glass  adapters 137 

Glass  cutters 107 

Glass  dishes,  crystallizing 85 

Glass  feet 19 

Glass  gauge  tubes 106 

Glass  gauge  washers 107 

Glass  graduates 115 

Glasses,  magnifying 166 

Glass  mortars 34 

Glass  plates 80 

Glass  receivers  137 

Glass  reducers 107 

Glass  retorts . .  137 


230 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


PAGE 

Glass  scale  pans 19 

Glass  syphons 112 

Glass  tubing 106 

Glasses,  bell 105,  106 

Glasses,  precipitating 104 

Glasses,  sand 127 

Glasses,  watch , 81 

Gloves 65 

Gold  dust  blowers 63 

Gold  pans 44 

Gold  scales 30 

Gold  washer,  or  rocker 178 

Gonda  batteries 176 

Graduated  pipettes 121 

Graduates,  glass 115 

Grain  weights 20 

Grain  weights,  aluminum 28 

Grenet  batteries 176 

Griffin's  beakers 79 

Gramme  weights 20,  26,  27 

Granulating  spoons 65 

Gravity  batteries 176 

Hahn's  displacement  generator 159 

Hammers,  ball  pean 72 

Hammers,  blowpipe,  Plattner's 71 

Hammers,  button  or  slag 71 

Hammers,  geological • 71,  72 

Hand  rolling  mill 75,  76 

Hand  scales 29 

Hand  vise 74 

Harding's  portable  blowpipe  outfit ....  195,  196 

Hessian  crucibles 61 

Hofman's  clamps 119,  120 

Holders  for  clamps 121 

Horn  pans  for  balances 13 

Horn  scoops 43 

Horn  spoons 43 

Horns,  miners' 44 

Horse  shoe  magnets 63 

Hoskins1  blowpipes 49,  50 

Hoskins'  combination  furnaces 52,  53 

Hoskins'  crucible  furnaces 52 

Hoskins'  muffle  furnaces 51 

Harvard  trip  scales 25 

Howe's  platform  scales 23 

Humid  assay  outfit 155,  156 

Humidity  hygrometer 125 

Kurd's  respirators 170 

Hydrometer  jars 129 

Hydrometers,  acid 127 

Hydrometers,  alcohol *. . .   127 

Hydrometers,  alkali 127 

Hydrometers,  ammonia    127 

Hydrometers,  bark 127 

Hydrometers,  beer 127 

Hydrometers,  cider 127 

Hydrometers,  coal-  oil 127 

Hydrometers,  ether 128 


PAGE 

Hydrometers,  milk 128 

Hydrometers,  saccharometers  Brix 128 

Hydrometers,  salinometer 128 

Hydrometers,  salt 128 

Hydrometers,  specific  gravity 128 

Hydrometers,  syrup 1 28 

Hydrometers,  Twaddell's 12  •< 

Hydrometers,  urinometer 128 

Hydrometers,  vinegar 128 

Hydrometers,  whale-oil 128 

Hygrometers,  Daniel's 126 

Hygrometers,  humidity 126 

Hygrometers,  Mason's 126 

Ignition  tubes 82 

Incubator  Thermometers 125 

Iron  clamps 121 

Iron  crucible  racks  61 

Iron  crucibles 86 

Iron  ladles 173 

Iron-bound  mallets 69 

Iron  mortars 35 

Iron  retorts 170,  171 

Iron  scoops 24 

Jackass  furnace 49 

Jars,  battery 177 

Jars,  hydrometer 129 

Jars,  precipitating 104 

Jewelers'  form  blowpipes 92 

Jewell's  still 140 

Kennedy  boiling  flasks 77 

Kipp's  alkalimeter 162 

Kipp's  sulphuretted  hydrogen  generator. .   158 

Kipp-Wartha  generator 158 

Kjeldahl's  flasks 78 

Kohlrausch  polarization  flasks 123 

Labels,  blank 154 

Labels,  chemical 154 

Ladles,  bullion 173 

Ladles,  iron 173 

Locke's  hand  level 137 

Lamp,  blowpipe,  Fletcher's 88 

Lamp,  blowpipe,  Plattner's 88 

Lamp,  simplicity 89 

Lamp,  copper 87 

Lamps,  Dangler's 88 

Lamps,  Luhme's 87 

Lamps,  mine 173 

Lamps,  parting 90 

Lamps,  Rose's 87 

Lamps,  Russian 87 

Lamps,  spirit 89 

Lamps,  White's 

Letters,  steel 69 

Lenses,  Coddington 166 


JOHN  TAYIvOR  &  CO.,  SAN  FRANCISCO,  CAUF. 


231 


PAGE 

Levels,  Locke's  hand 137 

Levels,  spirit * 18 

Liebig's  condensers 137,  138 

Lietyg's  still  and  condenser  combined 138 

Liter  flasks 123 

Lime,  prepared 94 

Lingke's  button  brushes 70 

Luhme's  lamps 87 

Magnets,  bar 63 

Magnets,  horse-shoe 63 

Magnifying  glasses 166 

Mallets,  iron 69 

Mallets,  wood 69 

Manganese  assay  apparatus 162 

Marsh's  alkalimeter 162 

Mason's  hygrometers 126 

Melters'  mittens 65 

Melting  furnaces 46 

Melting  furnaces,  extra  parts  for 46 

Mercury  troughs 141 

Metric  weights,  coin  shape 28 

Milk  hydrometers 128 

Mill  brooms 174 

Mill,  one-stamp  quartz 39 

Mill  pails 174 

Mill  sponges 174 

Mine  lamps 173 

Mine  transit,  Brunton's 135 

Mineral  collections 200,  201 

Mineral  and  chemical  substances 201 

Miners'  compasses 136 

Miners'  gold  pans 44 

Miners'  horns 44 

Mittens,  asbestos 65 

Mittens,  melters' 65 

Mixing  bottles 114 

Mohr's  alkalimeter 162 

Mohr's  burettes 116,  117 

Mohr's  pipettes 122 

Mohr's  pinch-cock. 119 

Moisture  scales 24,  25 

Mohr's  specific  gravity  balance 31 

Mortars,  agate 35 

Mortars,  amalgam 35 

Mortars,  combined  crusher  and  pulverizer,  36 

Mortars,  diamond 35 

Mortar  dusting  brushes 37 

Mortars,  glass 34 

Mortars,  iron , 34 

Mortars,  porcelain 34 

Mortars,  Wedgewood 34 

Moulds,  bullion 66 

Moulds,  cupel 70 

Moulds,  pouring 67 

Moulds,  scorifier 70 

Moulds;  sliding  bar 66 

Muffles,  Battersea 57 


PAGE 

Muffles,  clay,  Denver 59 

Muffle  furnace,  Hoskins' 51 

Nessler's  tubes 116 

Nets,  for  blowers 99 

Nevada  iron  retorts 171 

Nickel  crucibles 147 

Nickel  evaporating  dishes 147 

Nicholson's  areometer J29 

Nitrogen  bulbs 165 

Normal  school  crucibles 86 

Normal  sugar  weights 20 

Oertling's    assay    and   analytical    balance 

riders 13 

Oertling's  assay  balances ]_4 

Oertling's  assay  weights 11,  12 

Oertling's  extra  pans  for  balances 13 

Ore  sample  bags 42 

Ovens,  drying 91 

Oxyhydric  blowpipes 94 

Oxygen  retorts 139 

Pads,  asbestos 80 

Pails,  mill 174 

Pans,  balanced  for  assay  balances 13 

Pans,  glass,  scale 19 

Pans,  sampling,  tin 63 

Paper,  sampling,  glazed 42 

Parting  lamps 90 

Peffer's  alkalimeter 162 

Pencils,  camel's-hair 19 

Pencils,  chalk 70 

Percolators 158 

Picks,  prospectors' 72 

Pincets 33 

Pinch-cocks,  Mohr's 119 

Pipettes,  graduated 121 

Pipettes,  Mohr's 122 

Pipettes,  volumetric 121 

Plates,  copper 39 

Plates,  glass 80 

Platform  bullion  scales,  Fairbank's 23 

Platform  bullion  scales,  Howe's 23 

Platinum  boats 144 

Platinum  cones 144 

Platinum  crucibles 143 

Platinum  cylinder  and  spiral 144 

Platinum  dishes 144 

Platinum  flexible  filters 144 

Platinum  sheet 146 

Platinum  spatulas 144 

Platinum  sponge 144 

Platinum  wire 146 

Plattner's  anvils 71 

Plattner's  blowpipes 92 

Plattner's  blowpipe  balances 10 

Plattner's  blowpipe  furnaces 97 


232 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CAIJF. 


PAGE 

Plattner's  blowpipe  hammers 71 

Planner's  blowpipe  lamps 88 

Pliers 73 

Plutnbago  crucibles 62 

Pneumatic  troughs 141 

Pocket  assay  balance 10 

Pocket  compasses 136 

Pokers,  iron 65 

Polarization,  flasks,  Kohlrausch's 123 

Porcelain  combustion  boats 147 

Porcelain  combustion  tubes 147 

Porcelain  mortars 34 

Porcelain  retorts 138 

Portable  balances,  Becker's 5 

Portable  balances,  Troemner's 9 

Portable  furnaces,  Battersea 48 

Potash  bulbs 165 

Pouring  moulds 67 

Prat  and  Dumas  filter  paper 102 

Precipitating  glasses 104 

Precipitating  jars  .    104 

Prospectors'  kit 177 

Prepared  limes 94 

Press,  rotary  cork 109 

Prisms 148 

Prospector's  picks 72 

Pulp  balances 17,  18 

Pulp  spoons 19 

Pump,  acid,  glass 112 

Pump,  filtering,  Chapman's 160 

Pump,  filtering,  Richards' 160 

Pump,  transfer 139 

Pyrometers 123 

Quartz  mill,  one  stamp  39 

Quadruple  bullion  mould 66 

Racks,  crucible 61 

Racks,  test  tube 83 

Rapid  filtering  apparatus,  Bunsen's 160 

Reagent  bottles 150-153 

Receivers,  glass 137 

Rectifier 138 

Reddle 70 

Reducers,  glass 107 

Reduction  crucibles 86 

Reduction  tubes 162 

Reference  tables 224 

Respirators 170 

Retorts,  Bohemian  glass 137 

Retorts,  copper 138 

Retorts,  iron 170,  171 

Retorts,  oxygen 139 

Retorts,  porcelain 138 

Ribbed  funnels 100 

Richards'  filtering  pump 160 

Riders  for  assay  and  analytical  balances  . .  13 

Rings,  filtering 101 


Roasting  dishes,  Battersea 58 

Roasting  dishes,  Denver  clay 60 

Robiquet's  displacement  generator 159 

Rock  crusher,  Taylor's 38 

Rocker,  or  gold  washer 178 

Rods,  stirring,  glass 106 

Rohrbeck's  alkalimeter 162 

Rolling  mill,  the  Crown 76 

Rolling  mills,  hand 75,  76 

Rope,  manila,  bags 42 

Rose  crucibles 86 

Rose's  lamps 87 

Ross'  blowpipes 93 

Rubber  discs  for  blowers 99 

Rubber  faucets 112 

Rubber  funnels 100 

Rubber  scrapers 170 

Rubber  sheet 42 

Rubber  stoppers 110 

Rubber  tubing 107 

Russia  iron  screens 39 

Russian  lamps 87 

Saccharometers,  Brix    128 

Salinometers,  or  sea  water  hydrometers  . . .   128 

Salt  hydrometers 128 

Salt  mouth  bottles 149 

Samplers 41 

Sampler  and  scoop 41 

Sampling  bottles -. 42 

Sampling  cloth 42 

Sampling  pans,  agateware 63 

Sampling  pans,  tin 63 

Sampling  paper 42 

Sampling  paper,  glazed 42 

Sand  baths 80 

Sand  glasses 127 

Scales,  hand 29 

Scales,  gold,  Troemner's 30 

Scales,  moisture 24,  25 

Scale  pans,  glass 19 

Scales,  trip 25 

Scales,  Union 30 

Schellbach's  burettes 117 

Schleicher  &  Schull's  filter  paper 103,  104 

Schroedter's  alkalimeter 162 

Schuster's  acid  test  bottles 114 

Scissors 73 

Scoops 43 

Scoops,  amalgam 172 

Scorifiers,  Battersea 58 

Scoops,  brass 

Scorifiers,  Denver  clay 60 

Scoops,  iron 24 

Scoop  and  sampler 41 

Scorifier  moulds 70 

Scorifier  trays 68 

Scorifier  tongs 63,  64 


JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 


233 


Scrapers,  hearth 65 

Scrapers,  rubber 170 

Screens,  battery 167 

Screens,  Russia  iron 39 

Screens,  tin 170 

Self-registering  thermometers 125 

Separatory  funnels 100,  101 

Sharpeners,  cork  borer   110 

Shears,  snip 73 

Sheet  platinum 146 

Sheet  rubber 42 

Shovel 65 

Sieves,  brass  wire 45 

Sieves,  tin  frame 45 

Sieves,  wood  rim 45 

Silver  crucibles 146 

Silver  dishes 146 

Simplicity  lamp 89 

Skidmore's  Normal  School  crucibles 86 

Skimmer  crucible 65 

Slag  hammers 71 

Sluice  blankets 171 

Sluice  box 39,  178 

Sluice  brushes 174 

Snip  shears  73 

Soxhlet's  extraction  apparatus    141 

Spatulas 43 

Spatulas,  platinum 144 

Specific  gravity  balances,  Westphal's 31 

Specific  gravity  bottles  122 

Specific  gravity  hydrometers 128 

Spirit  lamps 89 

Spirit  levels 18 

Sponges,  mill 174 

Sponge  platinum 144 

Spoons,  deflagrating 104 

Spoons,  deflagration 144 

Spoons,  granulating 65 

Spoons,  horn  43 

Spoons,  pulp i9 

Squibb's  burettes 117 

Stamps,  steel 69 

Steel  brushes 174 

Steel  figures 69 

Steel  letters 69 

Steel  stamps 69 

Still  and  condenser  combined,  I/iebig's ....  138 

Stills  and  condensers 140 

Stills,  Jewell's 140 

Stirring  rods,  glass 106 

Stirrers,  black  lead 62 

Stoddard's  clamps 118 

Stoves,  coal-oil 98 

Stop-cocks 110 

Stop-cocks,  brass Ill 

Stop-cocks,  glass,  Geissler's 110 

Stoppers,  rubber 110 

Strainers,  amalgam 171 


PAGE 

Students'  mineral  collection 201 

Sugar  flasks 123 

Sugar  weights,  normal   20 

Sulphuretted-hydrogen  generator,  Kipp's. .   158 

Supports,  carboy 113 

Supports  for  funnels 133,  134 

Supports,  iron  and  wood  for  burettes 132 

Supports,  rings  for 132 

Swedish  filter  paper 102,  103 

Syphons,  glass 112 

Syrup  hydrometer 128 

Taylor's  assay  balance 7 

Taylor's  blowpipe 50 

Taylor  &  Go's  furnaces 47 

Taylor  &  Go's  furnaces,  extra  parts  for.  ...     47 

Taylor  John  &  Go's  blowpipe 92 

Taylor's  pulp  balance 17 

Taylor's  rock  crusher 38 

Test  tube  brushes 82 

Test  tube  racks 83 

Test  tubes 82 

Test  tubes,  graduated Hg 

Thermometer  scales,  transposition  of. 126 

Thermometers 124,  125 

Thermometers,  chemical 124 

Thermometers,  floating 124 

Thermometers,  incubator 125 

Thermometers,  self-registering 125 

Thimbles,  extraction 104 

Three-way  tubes 109 

Tin  blowpipe  lamp 88 

Tin  samplers 41 

Tin  sampling  pans 63 

Tin  screens 170 

Tincture  bottles 149 

Tips,  blowpipe 92 

Tongs,  clasp 65 

Tongs,  crucible 63,  64 

Tongs,  cupel 63,  64 

Tongs,  scorifier 63,  64 

Transfer  pump 139 

Trays,  acid 86 

Trays,  cupel  or  scorifier 68 

Triangular  crucible  covers 56-61 

Triangular  form  crucibles , 56-61 

Triangles,  wire 130 

Trip  scales 25 

Tripods,  brass 130 

Tripods,  iron 130 

Tripods,  twisted  wire 130 

Troemner's  assay  and  analytical  balance 

riders 13 

Troemner's  analytical  balances 14 

Troemner's  assay  balances 8,  9 

Troemner's  assay  ton  weights 20 

Troemner's  assay  weights 11,  12 

Troemner's  bullion  weights 26 


234 


JOHN  TAYU)RI&  CO.,  SAN  FRANCISCO,  CALIF. 


Troemner's  extra  pans  for  balances 31 

Troemner's  gold  scales 30 

Troemner's  gramme  weights 20 

Troemner's  grain  weights 20 

Troemner's  hand  scales 29 

Troemner's  portable  balance 

Troemner's  pulp  balances 17 

Troughs,  mercury 

Troughs,  pneumatic 141 

Troy  cup  weights 

Troy  decimal  weights 26 

Troy  weights,  coin  shape  28 

Tryer  and  sampler 41 

Tubes,  calcium  chloride 147,  148 

Tubes,  combustion,  porcelain 147 

Tubes,  dropping 122 

Tubes,  eudiometer 163 

Tubes  for  Woulf  bottles 105 

Tubes,  funnel  and  thistle 101 

Tubes,  gas  regulator 163 

Tubes,  ignition 82 

Tubes,  Messler's 116 

Tubes,  reduction 162 

Tubes,  Scotch  glass  gauge 106 

Tubes,  test 82 

Tubes,  test,  graduated 116 

Tubes,  three-way 109 

Tubes,  wash  bottle 81 

Tubing,  glass 106 

Tubing,  rubber 107 

Twaddell's  hydrometers 128 

Union  scales 30 

Universal  clamps 121 

Urinometer  hydrometers 128 

Vinegar  hydrometers 128 

Vise  and  anvil,  combined  ...'.... 74 

Vise,  Bonney's 74 


Vise,  hand 74 

Volumetric  flask 123 

Volumetric  pipettes 121 

Wash  bottles 105 

Wash  bottle  tubes &1 

Wash  bottles,  Fresenius' 81 

Washers,  glass  gauge  . .    107 

Watch  glass  clamps  81 

Watch  glasses 81 

Water  baths 90,  91 

Water  jackets 171 

Wedge  wood  mortars 34 

Weights,  assay 11,  12 

Weights,  assay  and  analytical 20 

Weights,  assay,  ton 20 

Weights,  bullion 26,  27 

Weights,  decimal  grain  28 

Weights,  decimal,  Troy 26 

Weights,  gramme 26,  27 

Weights,  normal,  sugar 20 

Weights,  Troy,  cup 26 

Westphal's  specific  gravity  balances 31 

Whale-oil  hydrometers 128 

White's  lamp 87 

Wicks 173 

Wicks,  flat 98 

Wide  mouth  bottles 149 

Wire  battery  cloth 168,  169 

Wire  brushes 67 

Wire  gauze 80 

Wire,  platinum 146 

Wire  triangles 130 

Wood  bateas 44 

Wood  clamps 118 

Wood  mallets 69 

Woulf  bottle  tubes 105 

Woulf  bottles..  .   104 


FRASER  &  CHALMERS 

CHICAGO,  ILL.,  U.  S.  A. 


Manufacturers  of- 


Complete  Equipment  for 
Mining  and  Metallurgical  Works 


Estimates  on  request.  Write  tor  Catalogues,  specifying  lines  of  Interest. 

FRASER  &  CHALMERS,  Chicago,  III.,  U.  S.  A. 


HAMMERED  PLATINUM  WARE 


&  GO. 


—MANUFACTURERS  OF— 


Hammered  Platinum  Ware 


PURPOSES. 


New  York  Office, 

120  Liberty  Street,  N.  Y. 


NEWARK,  N.  J. 


We  would  suggest  to  those  using  Platinum  goods  in  any 
form  that  they  write  for  prices  or  stock  to  JOHN  TAYLOR  &  CO., 
San  Francisco,  Cal.,  our  Pacific  Coast  Agents. 


BAKER  &  ADAMSON  CHEMICAL  CO. 


Manufacturers  at  both  places  of  the  FINEST  ACIDS  and  CHEMICALS- 

THEIR  AOIDS,  STRICTLY   CHEMICALLY  PURE: 

Muriatic,  sp.  gr.,  1.20 

Nitric,      ....  1.42 

Sulphuric,  1.84 

Ammonia,  0.90 

Can  all  be  relied  upon  by  the  Assayers  and  Chemists  in  the  Mining  Districts  to 
perform  the  chemical  reactions  so  important  to  determine  Gold  and  Silver  values. 
All  their  Chemicals  are  correct,  and  sold  at  Lowest  Prices. 


PACIFIC  COAST  AGENTS. 


JOHN    TAYLOR    &    CO., 

63    FIRST    STREET,    SAN    FRANCISCO, 

Above  Acids  and  Ammonia  furnished  in  one-lb.  or  half-gallon  bottles,  carboys,  or 

by  the  carload . 

CORRESPONDENCE    SOLICITED 


THE  ZIEQLER   ELECTRIC  COMPANY 

BOSTON,  MASS. 

Manufacturers  and  Importers  of  the  Finest  Quality  and 
Lowest-Priced 

Sehool,  Physical  and  Chemical  Apparatus 

TO  ILLUSTRATE 
Properties  of  Matter,  such  as 

Molecular  Force,  Capillarity,  Centrifugal  Force,  Momentum,  Center  of  Gravity,  Etc. 
Mechanics,  Hydrostatics,  Hydraulics,  Pneumatics,  Freezing 

Heat,  Expansion,  Acoustics,  Optics, 

Electricity  Static,  Electricity  Voltaic,  Magnetism,  Etc. 


JOHN  TAYLOR  &  Co. 

No.  63  FIRST  STREET,  SAN  FRANCI5CO 

Sole  Agents  for  the  Pacific  Coast. 


IN     184O 


HENRY    TROEMNER 


710   MARKET  STREET 


PHILADELPHIA 

—MAKER  OP— 

Assay  Balances 
Assay  Weights 


:>*< 


Used  exclusively  in  U.  S.  Assay  Offices 
in  NEW  YORK,  Seattle,  Deadwood,  U.  S 
Mint  Philadelphia,  New  Orleans,  Denver 
and  San  Francisco. 


—  FOR,    SALE 

JOHN  TAYLOR  &  CO.,  SAN  FRANCISCO,  CALIF. 

ILLUSTRATED  PRICE  LIST  ON  APPLICATION 


IMPORTANT  TO  GOLD  MINERS! 


FOR    SAVING    GOLD 

QUflRTZ,  G^AVEIi  AflD  PLiHCHH 


Warranted  the  Best  Made, 
Durable   and 
Satisfactory. 


Full  Weight  of  Silver  and  Best 

Quality  of  Plating 

Guaranteed. 


SEND  FOR  CIRCULAR. 


BEST  SOFT  LAKE  SUPERIOR  COPPER  USED. 


References  first-class.    Prices  the  very  lowest.    Have  received  every  Medal  awarded  on  the  Pacific  Coast 
for  Mining  Plates.    Old  Mining  Plates  Bought,  Replated,  or  Gold  Separated. 

DENNISTON'S 

San  Francisco  Gold,  Silver  and  Nickel=Plating  Works 

653  &  655  MISSION  STREET,  SAN  FRANCISCO 


These  Plates  can  also  be  procured  of  JOHN  TAYLOR  &  CO. 
Dealers  in  Assayers'  and  Mining  Material, 

63  FIRST  STREET,  SAN  FRANCISCO. 


EJ.    G-.     DKNNISTON, 

Proprietor 


CHRISTIAN  BECKER 

SUCCESSOR  TO  BECKER  &  SONS  AND  TO  BECKER  BROS. 

Manufacturer  of 

BALANCES  AND 
WEIGHTS  OF  PRECISION 

FOR  ASSAYERS,  CHEMISTS,  JEWELERS  AND  ALL  WHO  REQUIRE  ACCURACY  OF 
WEIGHT.     IN  USE  IN  ALL  COLLEGES  AND  IN  THE  SCIENTIFIC  DEPARTMENTS  OF 

THE  U.  S.  GOVERNMENT 

Only  Factory,  NEW  ROCHELLE,  N.  Y. 

OFFICE:  No.  117  CHAMBERS  STREET,  NEW  YORK  CITY 

Illustrated  Price  I^ist  on  Application 


JOHN  TAYLOR  &  CO. 

Special  Agents  for  the  Pacific  Coast 


Cooking  Utensils 


If  stamped  with 
this  trade- mark 


Safe 


Because  to  each  article  is  attached  a  chemist's  certificate,  guaranteeing  that  it 
is  free  from   arsenic,  antimony,    lead,    or  any  other  poisonous  ingredient 


—AND  OTHER  ARTICLES  FOR — 

Chemists,   Photographers  and    Laboratories,   Hospitals,   Asylums,  etc. 

LALANCE   &   GROSJEAN   MFG.   COMPANY, 

CHICAGO.  NEW    YORK.  BOSTON. 


The  Engineering  and  Mining  Journal  of  New  York 

The  best  and  most  influential  mining  paper  in  the  world*  Indispensable 
to  the  Prospector*  Miner.  Assayer.  Chemist.  Engineer,  Metallurgist,  Merchant, 
Manufacturer,  Banker,  Investor,  Legislator. 

SUBSCRIPTION  PRICE 

For  the  United  States,  Mexico  and  Canada,  $5.00  per  annum 
For  all  other  countries  in  the  Postal  Union,  $7.00     " 


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Its    Statistics,  Technology  and  Trade    in  the  United   States   and   other 
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TWO  VOLUMES  ILLUSTRATED  HEDIUM  8VO  $10  net 

A  HANDBOOK  OF  METALLURGY 

BY  TRANSLATED  BY 

CARL  SCHNABEL  HENRY  LOUIS 

Of  the  Royal  Academy  Professor  of  Mining  at  the 

of  J\ fines  Clansthal  Durham  College  of  Science 

A  Translation  of  Dr.  Carl  Schnabel's  "Handbook  of  fletallurgy" 

VOIAJM K  I.— ( 'OFFER— LEA1  >— SI  LVER— GOLD 
VOT.UM K  T I ,—ZIXC— CADMIUM— MERCURY— BISMUTH— 
TIN— ANTIMONY— ARSENIC'— NICKEI,— 
COBALT— PLATINUM— ALUMINUM 

K  German  original  is  acknowledged  to  be  the  best  existing  Avork  on   the   subject;   and 
this  new  translation  has  the  advantages  of  being  well   up   to    date  as  to  its  facts  and 
absolutely  modern,  in  its  descriptions  of  methods  of  treatment,  etc. 
The  author's   high   reputation   vouches   for  the   book,  which   will   appeal   the   more 
to  American  students  for  the  considerable  attention  given  to  work  done   in   different   parts  of 
the  United  States. 

Dr.  Schnabel's  rank  among  metallurgists  is  indicated  by  his  recent  call  to  Australia  to 

advise  as  to  complex  silver  ores  discovered  there. 
UP-TO-DATE 
MODERN  IN  flETHOD  The  translator's  name  lias  long  been  connected   with 

APPLICABLE  TO  mining  and  kindred  subjects,  not  oriby  through  his  book  on 

AnERICAN^CONDlTIONS  "Gold  Milling,"  described  by  the  Mining  Review  as  "One 

THE  BEST  WORK  ON  of  the  most  concise,  practical,  and  complete  treaties  yet  pub- 

THE  SUBJECT 

lished,"  but  also  because  of  his  practical  knowledge  of  all  the 
FULLY  ILLUSTRATED  ,     ,   .,      . 

details  (the  chemistry,  etc.),  of  the  subject,  and  of  the  investi- 
gations which  have  been  made  in  all  parts  of  the  world. 

^TT  is  A  curious  fact  that  there  does  not  exist  in  the  English  language  a  single  complete 

treatise  on  Metallurgy.     There  are  a  number  of  smaller  text-books  mainly  adapted  to 

the  use  of  students,  which  cover  the  entire  field,  but  make  no  pretense  of  describing  it 

with  any  thoroughness  of  detail;  and  there  are.  a  number  of  very  admirable  works  dedicated 

to  the  metallurgy  of  individual  metals. 

"Such  being  the  position  of  our  literature  011  this  subject,  I  venture  to  think  that  I  am 

rendering  a  distinct  service  in  submitting  a  translation  of   the 

THE  ONLY  THOROUGH  most  recent  and   most  exhaustive  work  on  the  subject  in  any 

language  from  the  pen  of  that  eminent  metallurgical  authority, 
WORK  OF  THIS  KIND 

Dr.  Carl  Schnabel,    of   Clausthal.     The   object   of   his   work   has 

been  to  give  a  complete  account  of  the  metallurgical  treatment  of  every  one  of  the  metals 
ordinarily  employed,  together  with  all  the  recent  improvements  in  the  art,  whilst  at  the  same 
time  pointing  out  the  scientific  principles  underlying  each  process,  and  illustrating  each  by 
examples  drawn  from  actual  practice  in  various  parts  of  the  world." 

— From  the  Author's  Preface. 
AGENTS     FOB     ABOVE 

JOHN    TAYLOR    &    CO. 

63    FIRST    STREET,    SAN     FRANCISCO. 


Buffalo  Dental  Mfg.  Co 


....  MANUFACTURERS    OF  . 


laboratory 


.   .    .  FOR  .   .   . 


CHEMISTS,  ASSAYHRS,  METALLURGISTS, 

JEWELERS,  DENTISTS,  LABORATORIES, 

COLLEGES,  ACADEMIES,  SCHOOLS, 

WORK  SHOPS. 


.  CONSISTING     OF  ... 


Foot  Blowers,  Blast  Blow-Pipes,  Melting  Furnaces, 

Assaying  Furnaces,  Muffle  Furnaces,  Bunsen 

Burners,  Crucibles,  Muffles,  Soldering 

Bit  Heaters,  Special  Heating 

Apparatus. 

587  &  589  Main  Street,  corner  of  Chippewa, 
BUFFALO,  N.  Y.,  U.  5.  A. 


Catalogue  B  sent  on  application 


JOHN  TAYLOR  &  CO.,  Agents 


SENT  ON  ILL 


t 


BERKELEY 


UNIVERSITY  OF  CALIFORNIA  LIBRARY, 
BERKELEY 

THIS  BOOK  IS  DUE  ON  THE  LAST  DATE 
STAMPED  BELOW 

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demand  may  be  renewed  if  application  is  made  before 
expiration  of  loan  period. 

I 


REC'D  LD 


Ve-S 


'•• 


